incontrovertible

adjective

in·​con·​tro·​vert·​ible (ˌ)in-ˌkän-trə-ˈvər-tə-bəl 

: not open to question : indisputable

incontrovertible facts

incontrovertibly

(ˌ)in-ˌkän-trə-ˈvər-tə-blē 

adverb

Did you know?

If something is indisputable, it's incontrovertible. But if it is open to question, is it controvertible? It sure is. The antonyms controvertible and incontrovertible are both derivatives of the verb controvert (meaning "to dispute or oppose by reasoning"), which is itself a spin-off of controversy. And what is the source of all of these controversial terms? The Latin adjective controversus, which literally means "turned against."

Synonyms of incontrovertible

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

Examples of incontrovertible in a Sentence

incontrovertible facts that left the jury with no choice but to convict

Recent Examples on the Web

And through the former player's testimony on Friday, the attorneys for Vaccaro have not yet produced incontrovertible evidence of physical violence by Hill against their client. — Armando Salguero Outkick, FOXNews.com, 9 Oct. 2026

To some, the attack fulfilled long-term right-wing warnings that Israel’s withdrawal from Gaza would yield disaster; and the attack was incontrovertible proof that Palestinians will never live in peace with Israel. — Dahlia Scheindlin, Time, 7 Oct. 2026

That is what’s decreed by the Premier League, which reviews each incident and only wants players to be sent off if there is incontrovertible evidence that the referee had no choice. — Graham Scott, New York Times, 25 Aug. 2026

By slow degrees, Philip’s story shifts to accommodate the incontrovertible evidence of IP addresses and deciphered cryptography and Lucy struggles to keep up, let alone understand. — Leslie Felperin, HollywoodReporter, 15 May 2026

Word History

First Known Use

1646, in the meaning defined above

Rhymes for incontrovertible

• inconvertible
• convertible
• invertible

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Kids Definition

incontrovertible

adjective

in·​con·​tro·​vert·​ible (ˌ)in-ˌkän-trə-ˈvərt-ə-bəl 

: indisputable

incontrovertible evidence

incontrovertibly

-blē 

adverb