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

While age plays an undeniable role in fertility, research shows that lifestyle changes can improve your chances of conceiving. —Rachel Hosie, SELF, 16 Feb. 2026

But Nadeem and Shabnam’s chemistry is undeniable, and the musical numbers are lively and impressive. —Bilge Ebiri, Vulture, 16 Feb. 2026

The parallels between South Africa and the United States are undeniable, and yet Tutu’s journey reminds us that even in the face of systemic hatred, faith and hope can be acts of rebellion. —Scott Roxborough, HollywoodReporter, 15 Feb. 2026

And the upsides have been undeniable. —Emma Burleigh, Fortune, 15 Feb. 2026

Word History

First Known Use

1547, in the meaning defined at sense 1

Rhymes for undeniable

• leviable
• reliable
• classifiable
• justifiable
• modifiable
• notifiable
• satisfiable
• specifiable
• unreliable
• verifiable
• emulsifiable
• identifiable

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