English Reference

Word

undeniable

Phoneticsun·de·ni·able

US/ˌəndɪˈnaɪəbəɫ/

UK/ˌʌndɪnˈaɪəbəl/

Definition

adj. clearly true and impossible to argue with. You use this when something is so obvious that nobody can say it is wrong.

adj. impossible to deny or dispute; clearly established as true. Often used to emphasize the strength of evidence or the presence of a specific quality.

Examples

“The evidence against the suspect was undeniable.”

“Despite the team's recent losses, their star player's talent remains undeniable to everyone in the league.”

“While the economic impact of the new policy is still being debated, the undeniable improvement in local air quality has won over many former critics.”

Examples

simple

“The evidence against the suspect was undeniable.”

contextual

“Despite the team's recent losses, their star player's talent remains undeniable to everyone in the league.”

complex

“While the economic impact of the new policy is still being debated, the undeniable improvement in local air quality has won over many former critics.”

Usage

Often used with 'fact', 'truth', or 'evidence'. Frequently follows linking verbs like 'be', 'seem', or 'remain'.

Real-World Examples

“But there is an undeniable astuteness and agility in the storytelling here on which Ross can build.”
The Guardian 31 Aug 2026
“Their appeal is undeniable, and our Smithsonian Magazine Photo Contest entrants are fans.”
Smithsonian Magazine 26 Jun 2026

Etymology

From un- + deny + -able, compare deniable.

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

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944EikenEikenTest in Practical English ProficiencyThe English proficiency test from the Eiken Foundation of Japan, widely taken by Japanese students. Grades run from 5 to 1, with Pre-1 and Pre-2 between them.Pre-1
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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