English Reference

Word

clue

US/ˈkɫu/

UK/klˈuː/

Definitions

01evidence for a mystery

B1 · Intermediate Countable noun

n. a sign or some information that helps you find the answer to a crime or a mystery.

n. a piece of evidence or a fact that serves as a guide in the investigation of a mystery or crime.

“The police found a small clue near the window that helped them catch the thief.”

“Forensic investigators meticulously examined the crime scene, hoping to discover a single clue that might link the suspect to the robbery.”

Synonyms

02general understanding

B1 · Intermediate Uncountable noun Informal

n. knowledge or understanding of a situation.

n. insight or understanding regarding a specific subject or situation; frequently used in the negative to indicate total ignorance.

“I don't have a clue how to fix this computer, so I'll call a professional.”

“Despite having sat through the entire lecture, most of the students admitted they didn't have a clue about the complex theories discussed.”

03puzzle hint

B1 · Intermediate Countable noun

n. a piece of information that helps you find the answer in a game or a crossword.

n. a word, phrase, or sentence that points to the solution of a puzzle or crossword.

“The crossword clue for five across was very difficult to solve.”

“The cryptic crossword was particularly challenging because every clue contained a hidden pun or a double meaning.”

Synonyms

04to inform someone

B2 · Upper Intermediate Informal

v. to give someone information that they do not have yet.

v. to provide someone with necessary information or context; often used with the particles 'in' or 'up'.

“Can you clue me in on what happened at the meeting this morning?”

“The manager promised to clue the rest of the team in once the final details of the merger were confirmed.”

Collocations

Common phrases and expressions where native English speakers use the word “clue” in context.

Adjective

01. important clue

“The police found an important clue that helped them identify the thief.”

adj + noun

Etymology

Variant of clew (“a ball of thread or yarn”), from Middle English clewe, from Old English clīewen (“ball”), from Proto-West Germanic kliuwīn, from Proto-Germanic kliuwīną, klewô (“ball, bale”), from Proto-Indo-European glew- (“to amass, conglomerate; clump, ball, bale”). Sense evolution with reference to the one which the mythical Theseus used to guide him out of the Minotaur's labyrinth. More at clew.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

NOUN

clue(B1)

ADJECTIVE

Related words

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Common
Level
B1 · IntermediateOxford
Updated

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