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.

The internet age has had countless positive impacts on society, but also undeniable negative impacts.

From Salon • Apr. 16, 2026

Ultimately the combination of intelligence, technology and old-fashioned policework would build an undeniable case.

From BBC • Apr. 14, 2026

Puppet magic, though it may come in and out of fashion, is ancient and undeniable.

From Los Angeles Times • Apr. 13, 2026

"We spent a decade learning that social media companies will not self-regulate. We have now perhaps 18 months before the same lesson becomes undeniable for AI."

From Barron's • Apr. 10, 2026

It was undeniable: Stanton and Anthony made a dynamic team.

From "Votes for Women!" by Winifred Conkling

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!