undeniable

adjective

un·​de·​ni·​able ˌən-di-ˈnī-ə-bəl 

1

: plainly true : incontestable

an undeniable fact

2

: unquestionably excellent or genuine

an applicant with undeniable references

undeniableness noun

undeniably

ˌən-di-ˈnī-ə-blē 

adverb

Synonyms of undeniable

• unquestionable
• indisputable
• irrefutable
• unarguable
• incontrovertible
• incontestable
• indubitable
• conclusive
• positive
• definite
• inarguable
• irrefragable
• unanswerable
• unchallengeable

Examples of undeniable in a Sentence

The band's popularity is undeniable.

Recent Examples on the Web

But whether researchers intended to serve their funders’ agenda on CCS or not, some say the effect has been undeniable. — Katie Worth, ProPublica, 30 Oct. 2026

The only drama stemmed from the other team managing a single victory in the face of such undeniable dominance. — Hannah Keyser, CNN Money, 29 Oct. 2026

But the cold, hard budget realities the county faces, particularly in its role as Chicago’s primary healthcare provider of last resort, are undeniable. — The Editorial Board, Chicago Tribune, 27 Oct. 2026

Despite Brody’s regrets over how the proposal went down, the results are pretty undeniable. — Shania Russell, Entertainment Weekly, 26 Oct. 2026

Word History

First Known Use

1547, in the meaning defined at sense 1

Rhymes for undeniable

• liable
• pliable
• triable
• viable
• classifiable
• justifiable
• modifiable
• notifiable
• satisfiable
• specifiable
• unreliable
• verifiable

Kids Definition

undeniable

adjective

un·​de·​ni·​able ˌən-di-ˈnī-ə-bəl 

1

: plainly true : incontestable

2

: positively excellent or genuine

undeniably

-blē 

adverb