undeniable

[uhn-di-nahy-uh-buhl] / ˌʌn dɪˈnaɪ ə bəl /

ADJECTIVE

definite, proven

Synonyms

STRONGEST

certain evident indisputable irrefutable obvious unassailable unquestionable

WEAK

actual beyond doubt beyond question binding clear compulsory for sure inarguable incontestable incontrovertible indubitable manifest necessary no ifs and or buts obligatory open and shut patent positive real sound sure sure thing true unanswerable undoubted

Antonyms

STRONGEST

disputable doubtful dubious indefinite obscure questionable refutable uncertain unclear unreliable unsure vague

WEAK

contestable doubted unproven

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When confronted with an undeniable fact — in this case, thousands of people booing a sitting president — the healthy human mind adjusts its understanding of reality.

From Salon • Jun. 11, 2026

But Haaland's stock is undeniable and with that comes all those other things associated with being a superstar - shirt sales, increased interest in the World Cup, and inspiring youngsters.

From BBC • Jun. 7, 2026

That the big AI spenders are reshaping their balance sheets and cash flow statements is undeniable.

From Barron's • Jun. 2, 2026

It is undeniable that the economics of television and late night have changed.

From MarketWatch • May 15, 2026

Bobby’s interest in making money was undeniable, so theories abounded as to why he acted contrary to his own financial interests.

From "Endgame" by Frank Brady

Vocabulary lists containing undeniable

The Real Deal: Synonyms for "True"

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

This Week in Words: August 11 - 17, 2018

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

The Boy in the Striped Pajamas

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!