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Definitions

irrefutable

[ih-ref-yuh-tuh-buhl, ir-i-fyoo-tuh-buhl] / ɪˈrɛf yə tə bəl, ˌɪr ɪˈfyu tə bəl /
ADJECTIVE
beyond question
Synonyms
STRONGEST
indisputable ironclad unassailable undeniable
WEAK
accurate apodictic can bet on it certain double-checked evident final inarguable incontestable incontrovertible indubitable invincible irrebuttable irrefragable irresistible nof ifs ands or buts obvious odds-on positive proven set sure unanswerable unimpeachable unquestionable
Antonyms
STRONGEST
disputable indefinite
WEAK
doubtful dubious questionable refutable uncertain

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.

“All the Beauty and the Bloodshed” is irrefutable proof of the impact of activism, no matter what level it starts at.

From Salon • Mar. 14, 2026

Yet the mountain of information regarding the link between repeated helmet-to-helmet hitting and CTE is irrefutable.

From Los Angeles Times • Mar. 4, 2026

It was, at last, irrefutable proof that Charli knows best.

From Salon • Feb. 8, 2026

His Ghanaian passport was approved following "confirmation of the irrefutable ties of IShowSpeed to Ghana", Foreign Minister Samuel Okudzeto Ablakwa posted on social media.

From BBC • Jan. 28, 2026

He knew he was right; he just had to make his argument clear enough so as to be, as much as was possible, irrefutable.

From "Charles and Emma: The Darwins' Leap of Faith" by Deborah Heiligman