🔎55 Synonyms for Indication: Powerful Alternatives (2026)

A top synonym for indication is sign, which describes any observable clue or marker. Other powerful alternatives include indicator, clue, and evidence. Choosing the right option depends on your specific context—whether you are talking about medical symptoms, data trends, or everyday hints—allowing you to communicate meaning precisely without repetition.

A synonym for indication helps you describe signs or clues that point to a specific truth. Picture walking down a dark trail and spotting a broken branch that signals you are on the right path. That exact physical sign acts as a clear indication of your direction.

Using a synonym for indication adds fresh color to your daily vocabulary choices. Repeating the same noun makes your writing sound flat and repetitive. Dynamic alternatives help your stories grab the reader’s attention instantly. Strong descriptions bring conversational moments to life with vivid clarity.

Writers, students, and bloggers rely on a strong synonym for indication to show hidden clues. Great vocabulary choices turn ordinary sentences into unforgettable storytelling gems. Expressing signs clearly keeps your audience hooked from start to finish.

Mastering this concept elevates your everyday English communication skills. Clear language helps you connect deeply with readers across various platforms. Discovering precise alternatives unlocks a whole new level of creative expression.

What Does “Synonym for Indication” Really Mean?

Indication means a sign, mark, or symptom that points to something or suggests a specific action. Native speakers use it when talking about data trends, medical symptoms, or subtle clues. It carries a neutral, objective, or analytical emotional tone. You see it often in scientific research, business reports, and everyday conversations.

Part of Speech: Noun.

Simple Definition: A sign or piece of information that points to something.

Connotative Meaning

• Positive tone: Pointing toward success, health improvement, or positive trends.
• Neutral tone: Pure factual data points, symptoms, or navigational markers.
• Negative tone: Warning signs of trouble, failure, or impending danger.

Etymology and Word Origin

The root comes from the Latin word indicare, meaning to point out or show. The prefix in- means toward.

• Old English (450–1100): Early Germanic crews used physical pointing terms for signs.
• Middle English (1100–1500): Borrowed from Latin legal and administrative language.
• Modern English (1500–Present): Standardized into the common noun form used today.

Pronunciation & Syllables

• US: /ˌɪndɪˈkeɪʃən/
• UK: /ˌɪndɪˈkeɪʃn/
• Syllables: in-di-ca-tion
• Root: dicare (to proclaim or show)
• Prefix: in- (toward)
• Suffix: -ion (noun maker)

Synonyms List

Sign (Noun) — US: /saɪn/ | UK: /saɪn/

• Meaning: An event, object, or condition that suggests a particular fact.
• Tone/Register: Everyday / Simple
• Example: Dark clouds were a clear sign of an approaching storm.
• Example: Her smile was a positive sign of approval.

Clue (Noun) — US: /kluː/ | UK: /kluː/

• Meaning: A piece of evidence that helps solve a problem or mystery.
• Tone/Register: Casual / Conversational
• Example: Detectives searched the room for a clue regarding the theft.
• Example: The old map gave a vital clue to the hidden treasure.

Hint (Noun) — US: /hɪnt/ | UK: /hɪnt/

• Meaning: A slight or indirect suggestion about something.
• Tone/Register: Informal / Everyday
• Example: He dropped a subtle hint about his favorite restaurant.
• Example: There was not a single hint of worry on her face.

Cue (Noun) — US: /kjuː/ | UK: /kjuː/

• Meaning: A signal for someone to do something or for an event to begin.
• Tone/Register: Professional / Stage
• Example: The actor waited backstage for his audio cue to enter.
• Example: Take your cue from the moderator during the debate.

Symptom (Noun) — US: /ˈsɪmptəm/ | UK: /ˈsɪmptəm/

• Meaning: A physical feature indicating a condition of disease or trouble.
• Tone/Register: Medical / Scientific
• Example: Fever and fatigue are common symptoms of the flu.
• Example: Declining sales were a dangerous symptom of market shifts.

Proof (Noun) — US: /pruːf/ | UK: /pruːf/

• Meaning: Evidence establishing the truth or validity of a fact.
• Tone/Register: Formal / Legal
• Example: The scientist needed solid proof to support her theory.
• Example: Receipts served as proof of purchase for the return.

Evidence (Noun) — US: /ˈɛvɪdəns/ | UK: /ˈɛvɪdəns/

• Meaning: Facts indicating whether a belief is true or valid.
• Tone/Register: Academic / Legal
• Example: Fingerprints provided crucial evidence at the crime scene.
• Example: Data offered clear evidence of climate change trends.

Manifestation (Noun) — US: /ˌmænɪfɛˈsteɪʃən/ | UK: /ˌmanɪfɛˈsteɪʃn/

• Meaning: An event or action that shows something clearly.
• Tone/Register: Formal / Academic
• Example: Shivering is a physical manifestation of cold stress.
• Example: The protest was a public manifestation of anger.

Expression (Noun) — US: /ɪkˈsprɛʃən/ | UK: /ɪkˈsprɛʃn/

• Meaning: The conveying of feeling or a specific idea outward.
• Tone/Register: Literary / Everyday
• Example: Her tears were an expression of pure relief.
• Example: Architecture serves as an expression of cultural values.

Demonstration (Noun) — US: /ˌdɛmənˈstreɪʃən/ | UK: /ˌdɛmənˈstreɪʃn/

• Meaning: The action of showing something clearly through proof.
• Tone/Register: Professional / Academic
• Example: The chef gave a live demonstration of pasta making.
• Example: The experiment served as a demonstration of gravity.

Display (Noun) — US: /dɪˈspleɪ/ | UK: /dɪˈspleɪ/

• Meaning: A performance or exhibition showing a quality or feeling.
• Tone/Register: Visual / Casual
• Example: Fireworks lit up the night sky in a brilliant display.
• Example: His anger was an uncharacteristic display of temper.

Exhibition (Noun) — US: /ˌɛksɪˈbɪʃən/ | UK: /ˌɛksɪˈbɪʃn/

• Meaning: A public display of works of art, skills, or items.
• Tone/Register: Formal / Cultural
• Example: The gallery hosted an exhibition of modern photography.
• Example: Athletes put on an amazing exhibition of stamina.

Token (Noun) — US: /ˈtoʊkən/ | UK: /ˈtəʊkən/

• Meaning: A thing serving as a visible symbol of a feeling.
• Tone/Register: Literary / Traditional
• Example: She gave him a small gift as a token of thanks.
• Example: A handshake served as a token of their agreement.

Mark (Noun) — US: /mɑːrk/ | UK: /mɑːk/

• Meaning: A visible impression or characteristic indicating a quality.
• Tone/Register: Descriptive / Everyday
• Example: Scars left a permanent mark on his hand.
• Example: Punctuality is the mark of a true professional.

Indicator (Noun) — US: /ˈɪndɪˌkeɪtər/ | UK: /ˈɪndɪˌkeɪtə/

• Meaning: A device or sign that shows a condition or state.
• Tone/Register: Technical / Analytical
• Example: Inflation is a major economic indicator of market health.
• Example: The fuel gauge acts as a digital indicator of gas levels.

Pointer (Noun) — US: /ˈpɔɪntər/ | UK: /ˈpɔɪntə/

• Meaning: A tip or hint directing attention toward something useful.
• Tone/Register: Informal / Helpful
• Example: The coach gave a helpful pointer on swing technique.
• Example: Dark skies served as a pointer for us to hurry home.

Guideline (Noun) — US: /ˈɡaɪdˌlaɪn/ | UK: /ˈɡaɪdˌlaɪn/

• Meaning: A general rule or piece of advice indicating proper steps.
• Tone/Register: Professional / Official
• Example: Company guidelines recommended daily data backups.
• Example: The teacher outlined safety guidelines for the lab.

Guide (Noun) — US: /ɡaɪd/ | UK: /ɡaɪd/

• Meaning: A person or thing that shows the correct path or method.
• Tone/Register: Practical / Helpful
• Example: The handbook served as a guide for new employees.
• Example: Local stars acted as a guide for midnight travelers.

Benchmark (Noun) — US: /ˈbɛntʃˌmɑːrk/ | UK: /ˈbɛntʃˌmɑːk/

• Meaning: A standard or point of reference against which things are compared.
• Tone/Register: Business / Technical
• Example: Quarterly earnings set a new benchmark for corporate success.
• Example: Test scores served as a benchmark for school quality.

Standard (Noun) — US: /ˈstændərd/ | UK: /ˈstændəd/

• Meaning: A level of quality or attainment used as a measure.
• Tone/Register: Formal / Official
• Example: The hotel maintained a high standard of cleanliness.
• Example: Safety regulations set the standard for factory work.

Criterion (Noun) — US: /kraɪˈtɪriən/ | UK: /kraɪˈtɪəriən/

• Meaning: A principle or standard by which something may be judged.
• Tone/Register: Academic / Formal
• Example: Cost was a major criterion when buying the new vehicle.
• Example: Experience remained the key criterion for the promotion.

Measure (Noun) — US: /ˈmɛʒər/ | UK: /ˈmɛʒə/

• Meaning: A plan or course of action taken to achieve a purpose.
• Tone/Register: Official / Business
• Example: Security measures were increased around the building.
• Example: Tax cuts served as a measure to boost spending.

Barometer (Noun) — US: /bəˈrɑːmɪtər/ | UK: /bəˈrɒmɪtə/

• Meaning: An instrument indicating changes or a thing that reflects trends.
• Tone/Register: Metaphorical / Formal
• Example: Public opinion polls act as a political barometer.
• Example: Consumer spending is a barometer of economic health.

Index (Noun) — US: /ˈɪndɛks/ | UK: /ˈɪndɛks/

• Meaning: An alphabetical list or a numerical scale indicating a value.
• Tone/Register: Academic / Financial
• Example: The consumer price index tracked rising household costs.
• Example: Readers checked the back index to find specific chapters.

Register (Noun) — US: /ˈrɛdʒɪstər/ | UK: /ˈrɛdʒɪstə/

• Meaning: An official list or record of items or names.
• Tone/Register: Administrative / Formal
• Example: Hotel guests signed the front desk register upon arrival.
• Example: Historic buildings appeared on the national register.

Record (Noun) — US: /ˈrɛkərd/ | UK: /ˈrɛkɔːd/

• Meaning: A thing constituting a piece of evidence about the past.
• Tone/Register: Official / Archival
• Example: Weather records showed the hottest summer on record.
• Example: Financial records confirmed the company’s steady profit.

Trace (Noun) — US: /treɪs/ | UK: /treɪs/

• Meaning: A mark, object, or other sign of the existence of something.
• Tone/Register: Descriptive / Detective
• Example: Police found no trace of the missing wallet.
• Example: A faint trace of perfume lingered in the empty room.

Vestige (Noun) — US: /ˈvɛstɪdʒ/ | UK: /ˈvɛstɪdʒ/

• Meaning: A trace of something that is disappearing or no longer exists.
• Tone/Register: Literary / Formal
• Example: Ancient walls remained as a vestige of the medieval fort.
• Example: Not a vestige of hope survived the devastating loss.

Shadow (Noun) — US: /ˈʃædoʊ/ | UK: /ˈʃadəʊ/

• Meaning: A dark area or a faint trace indicating something’s presence.
• Tone/Register: Poetic / Literary
• Example: He was a shadow of his former energetic self.
• Example: A shadow of doubt crossed her worried face.

Echo (Noun) — US: /ˈɛkoʊ/ | UK: /ˈɛkəʊ/

• Meaning: A sound or a reminiscent reminder of a past event.
• Tone/Register: Literary / Metaphorical
• Example: The empty hall carried a loud echo of footsteps.
• Example: The new policy felt like an echo of old mistakes.

Omen (Noun) — US: /ˈoʊmən/ | UK: /ˈəʊmən/

• Meaning: An event regarded as a portent of good or evil misfortune.
• Tone/Register: Literary / Mysterious
• Example: Ancient sailors viewed shooting stars as a bad omen.
• Example: Winning the coin toss felt like a lucky omen.

Portent (Noun) — US: /ˈpɔːrtɛnt/ | UK: /ˈpɔːtɛnt/

• Meaning: A sign or warning that something momentous is likely to happen.
• Tone/Register: Formal / Literary
• Example: Dark thunderclouds served as a portent of severe weather.
• Example: The sudden stock drop was a portent of recession.

Presage (Noun) — US: /ˈprɛsɪdʒ/ | UK: /ˈprɛsɪdʒ/

• Meaning: A sign or warning of an impending natural or human event.
• Tone/Register: Literary / Elevated
• Example: Quiet streets were a strange presage of the coming holiday.
• Example: Her bad dream felt like a presage of bad news.

Foreboding (Noun) — US: /fɔːrˈboʊdɪŋ/ | UK: /fɔːˈbəʊdɪŋ/

• Meaning: Fearful apprehension or a feeling that something bad will happen.
• Tone/Register: Emotional / Descriptive
• Example: A cold sense of foreboding settled over the lost hikers.
• Example: He shook off his morning foreboding and went to work.

Augury (Noun) — US: /ˈɔːɡjəri/ | UK: /ˈɔːɡjʊri/

• Meaning: A sign of what will happen in the future; an omen.
• Tone/Register: Formal / Archaic
• Example: Farmers read seasonal bird flights as an augury of harvest.
• Example: The quiet morning offered a peaceful augury for the day.

Harbinger (Noun) — US: /ˈhɑːrbɪndʒər/ | UK: /ˈhɑːbɪndʒə/

• Meaning: A person or thing that announces or signals the approach of another.
• Tone/Register: Literary / Formal
• Example: Blooming robins served as an early harbinger of spring.
• Example: The initial price spike was a harbinger of inflation.

Herald (Noun) — US: /ˈhɛrəld/ | UK: /ˈhɛrəld/

• Meaning: An official messenger or a sign that introduces something.
• Tone/Register: Historical / Literary
• Example: Medieval heralds announced the arrival of the royal king.
• Example: Cool autumn breezes acted as a herald of winter.

Precursor (Noun) — US: /priˈkɜːrsər/ | UK: /priˈkɜːsə/

• Meaning: A person or thing that precedes as a sign of something coming.
• Tone/Register: Academic / Formal
• Example: The early typewriter was a precursor to modern keyboards.
• Example: Mild headaches served as a precursor to the migraine.

Forerunner (Noun) — US: /ˈfɔːrˌrʌnər/ | UK: /ˈfɔːˌrʌnə/

• Meaning: A pioneer or sign preceding the development of something.
• Tone/Register: Historical / Formal
• Example: The basic biplane was a forerunner of commercial jets.
• Example: Local protests were the forerunner of a massive movement.

Symptomology (Noun) — US: /ˌsɪmptəˈmɑːlədʒi/ | UK: /ˌsɪmptəˈmɒlədʒi/

• Meaning: The set of symptoms characteristic of a medical condition.
• Tone/Register: Medical / Scientific
• Example: Doctors analyzed the patient’s complex symptomology.
• Example: Textbooks detailed the symptomology of rare viral strains.

Indicia (Noun) — US: /ɪnˈdɪʃə/ | UK: /ɪnˈdɪʃə/

• Meaning: Markings or signs indicating a particular quality or status.
• Tone/Register: Legal / Formal
• Example: Official documents bore postal indicia instead of stamps.
• Example: The device lacked standard safety indicia on its case.

Connotation (Noun) — US: /ˌkɑːnəˈteɪʃən/ | UK: /ˌkɒnəˈteɪʃn/

• Meaning: An idea or feeling that a word invokes in addition to meaning.
• Tone/Register: Linguistic / Academic
• Example: The word home carries a warm connotation of family.
• Example: Writers study semantic connotations to improve tone.

Implication (Noun) — US: /ˌɪmplɪˈkeɪʃən/ | UK: /ˌɪmplɪˈkeɪʃn/

• Meaning: The conclusion that can be drawn from something not stated.
• Tone/Register: Formal / Analytical
• Example: The boss’s tone carried a clear implication of change.
• Example: Scientists debated the environmental implications of the study.

Insinuation (Noun) — US: /ɪnˌsɪnjuˈeɪʃən/ | UK: /ɪnˌsɪnjuˈeɪʃn/

• Meaning: An unpleasant hint or suggestion directed at someone.
• Tone/Register: Negative / Formal
• Example: She rejected his unfair insinuation about her integrity.
• Example: Rumors relied on subtle insinuation rather than facts.

Suggestion (Noun) — US: /səɡˈdʒɛstʃən/ | UK: /səɡˈdʒɛstʃən/

• Meaning: An idea or plan put forward for consideration.
• Tone/Register: Everyday / Polite
• Example: He offered a helpful suggestion for improving workflow.
• Example: Her smile was a polite suggestion that it was time to leave.

Intimation (Noun) — US: /ˌɪntɪˈmeɪʃən/ | UK: /ˌɪntɪˈmeɪʃn/

• Meaning: An indication or indirect hint about a future event.
• Tone/Register: Literary / Formal
• Example: The letter gave no intimation of impending layoffs.
• Example: He felt an early intimation of success coming.

Innuendo (Noun) — US: /ˌɪnjuˈɛndoʊ/ | UK: /ˌɪnjuˈɛndəʊ/

• Meaning: An indirect hint or suggestion, typically of a disparaging nature.
• Tone/Register: Informal / Critical
• Example: Gossip columns relied heavily on cheap political innuendo.
• Example: She ignored the malicious innuendo whispered nearby.

Inkling (Noun) — US: /ˈɪŋklɪŋ/ | UK: /ˈɪŋklɪŋ/

• Meaning: A slight knowledge or suspicion; a hint about something.
• Tone/Register: Casual / Conversational
• Example: I had no inkling of the surprise party planned for me.
• Example: They gave an inkling of the upcoming product launch.

Glimmer (Noun) — US: /ˈɡlɪmər/ | UK: /ˈɡlɪmə/

• Meaning: A faint sign of hope, light, or positive feeling.
• Tone/Register: Poetic / Emotional
• Example: A faint glimmer of hope remained after the setback.
• Example: She caught a glimmer of light through the cabin window.

Spark (Noun) — US: /spɑːrk/ | UK: /spɑːk/

• Meaning: A small sign or trace of a quality or idea.
• Tone/Register: Dynamic / Expressive
• Example: A single spark of creativity ignited her novel.
• Example: There was not a spark of interest in his reply.

Ray (Noun) — US: /reɪ/ | UK: /reɪ/

• Meaning: A small beam of light or a subtle sign of hope.
• Tone/Register: Metaphorical / Warm
• Example: A ray of sunshine warmed the chilly morning room.
• Example: The news offered a bright ray of hope for families.

Touch (Noun) — US: /tʌtʃ/ | UK: /tʌtʃ/

• Meaning: A small amount or subtle trace of a specific quality.
• Tone/Register: Casual / Everyday
• Example: The soup needed a touch of salt for flavor.
• Example: Her voice carried a touch of irony during the speech.

Shade (Noun) — US: /ʃeɪd/ | UK: /ʃeɪd/

• Meaning: A slight amount or subtle variation of meaning or feeling.
• Tone/Register: Descriptive / Literary
• Example: Every shade of meaning mattered in translation work.
• Example: A shade of annoyance crossed his face.

Nuance (Noun) — US: /ˈnuːɑːns/ | UK: /ˈnjuːɑːns/

• Meaning: A subtle difference in shade of meaning, expression, or sound.
• Tone/Register: Academic / Literary
• Example: The actor captured every emotional nuance of the script.
• Example: Language learners study cultural nuance to speak naturally.

Tip (Noun) — US: /tɪp/ | UK: /tɪp/

• Meaning: A small piece of practical advice or a pointing indicator.
• Tone/Register: Casual / Helpful
• Example: The mechanic gave a useful tip on engine care.
• Example: Look at the tip of the pointer for orientation.

Synonyms by Tone

Choosing the right word depends entirely on your specific communication tone:

• Positive / Hopeful: Glimmer, Ray, Spark, Token.
• Neutral / Factual: Sign, Indicator, Index, Record, Standard.
• Negative / Warning: Foreboding, Portent, Omen, Innuendo.
• Formal / Academic: Manifestation, Precursor, Criterion, Evidence.

Tone matters because word choice dictates how your audience perceives a sign. Using a dramatic word like portent for a minor traffic sign sounds ridiculous. Matching your vocabulary to your exact intent keeps your message clear and honest.

Mini Comparison: Indication vs. Sign vs. Clue

Feature	Indication	Sign	Clue
Core Meaning	A structured pointer or symptom	A general visible mark or event	Evidence used to solve a mystery
Tone	Analytical / Formal	Everyday / Neutral	Investigative / Casual
Best Used	Business data, medicine, trends	Weather, road markers, actions	Detective work, puzzles, secrets

Use indication when analyzing data trends, market shifts, or medical symptoms. Switch to sign when pointing out everyday occurrences like traffic markers or weather patterns. Pick clue when talking about solving mysteries or figuring out puzzles.

Context-Based Usage

Daily Conversation

In casual chats, people use words like sign, hint, or clue. These terms keep spoken dialogue lively, relatable, and easy to follow.

Writing or Blogging

Bloggers favor descriptive words like indicator, pointer, or glimmer. These choices paint clear mental pictures for readers skimming content online.

Professional or Academic Tone

Professional settings require formal alternatives like evidence, manifestation, or precursor. Formal choices maintain authority and objective credibility.

Common Mistakes and Native Usage

• Overusing one word: Repeating the same noun weakens your prose.
• Mismatched tone: Using a dark word like omen for a positive economic report creates confusion.
• Grammar slips: Confusing countable nouns with uncountables in complex sentences.

Register Notes

Spoken English favors casual terms like hint or sign. Written English thrives on precise nouns like indicator or evidence.

Real-Life Mini Scenarios

• Workplace: Rising inflation figures served as an economic indication of upcoming budget adjustments.
• Social Situations: She dropped a subtle hint about her birthday plans over dinner.
• Media / Pop Culture: Financial analysts tracked market indicators during the live broadcast.
• Writing or storytelling: A sudden chill in the air felt like a spooky portent of danger.

Conclusion

Mastering a synonym for indication gives your writing remarkable depth and professional precision. Every alternative adds a unique flavor to your daily communication and storytelling. Fresh vocabulary helps you connect with readers on a much deeper level.

Practicing these words transforms your essays, emails, and conversations naturally. Try incorporating a new descriptive noun into your next writing project today. Consistent practice is the ultimate secret to building a powerful, native-level vocabulary.

Start experimenting with these terms in your daily conversations right now to sound more engaging and articulate.

Practice Exercise

1. Which synonym best fits an economic report tracking market inflation values?
   • A) Indicator
   • B) Omen
   • C) Glimmer
   • D) Vestige
2. What is the best word for a detective finding a fingerprint at a crime scene?
   • A) Clue
   • B) Token
   • C) Echo
   • D) Shade
3. Which term describes dark storm clouds threatening bad weather?
   • A) Portent
   • B) Standard
   • C) Benchmark
   • D) Index
4. When a doctor lists fever and coughing as medical signs, which word applies?
   • A) Symptom
   • B) Pointer
   • C) Guideline
   • D) Register
5. Which word describes a small beam of hope during a difficult time?
   • A) Glimmer
   • B) Trace
   • C) Record
   • D) Indicia
6. Select the term for a standard of measurement used in industry comparisons.
   • A) Benchmark
   • B) Innuendo
   • C) Inkling
   • D) Shadow
7. Which noun suits a historical artifact remaining from an ancient civilization?
   • A) Vestige
   • B) Tip
   • C) Spark
   • D) Ray
8. What word captures an early invention leading to modern computers?
   • A) Precursor
   • B) Hint
   • C) Cue
   • D) Sign
9. Which term describes an indirect, malicious suggestion whispered in gossip?
   • A) Innuendo
   • B) Evidence
   • C) Proof
   • D) Demonstration
10. Select the casual term for a slight suspicion about a surprise event.
    • A) Inkling
    • B) Manifestation
    • C) Symptomology
    • D) Criterion

Reflection Task:

Write one short sentence using the word “indicator” to describe a dashboard warning light.

Answer Key:

1: A | 2: A | 3: A | 4: A | 5: A | 6: A | 7: A | 8: A | 9: A | 10: A

FAQs

What is the difference between indication and sign?

Indication is often more analytical, pointing toward data trends, symptoms, or logical conclusions. Sign is a broader, more everyday term for any physical marker, symbol, or observable event.

Can I use evidence synonyms in formal research papers?

Yes, formal research papers benefit greatly from terms like manifestation, precursor, or evidence. These words maintain a polished, objective, and authoritative tone suitable for academic writing.

How do descriptive nouns improve creative writing?

They eliminate repetitive phrasing and give readers precise emotional and visual cues. Specific nouns show exact clues and warnings without requiring lengthy paragraphs of explanation.

Are terms like portent outdated in modern English writing?

Not at all. While formal and literary, words like portent and harbinger remain popular in storytelling, fiction, and journalism for describing dramatic warnings or upcoming changes.

How can English learners select the right sign noun?

Consider the emotional tone and context of the situation first. Match scientific data to an indicator, mystery puzzles to a clue, and literary warnings to a portent.