irrefutable

adjective

ir·​re·​fut·​able ˌir-i-ˈfyü-tə-bəl  i-ˈre-fyə-tə- 

ˌi(r)-

: impossible to refute : incontrovertible

irrefutable proof

irrefutability

ˌir-i-ˌfyü-tə-ˈbi-lə-tē 

i-ˌre-fyə-tə-

ˌi(r)-

noun

irrefutably

ˌir-i-ˈfyü-tə-blē 

i-ˈre-fyə-tə-

ˌi(r)-

adverb

Synonyms

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

Examples of irrefutable in a Sentence

There is irrefutable evidence that he committed these crimes.

the irrefutable reply of “Because I like it!”

Recent Examples on the Web

This is one example—despite longstanding beliefs—of an irrefutable truth. —Russell M. Nelson, Time, 5 Sep. 2025

Yet despite how normal these individuals may think their views on vulnerability are, the pain these ideologies can cause is still irrefutable. —Mark Travers, Forbes.com, 25 Aug. 2025

Be in no doubt that this irrefutable testimony. —Nadeen Ebrahim, CNN Money, 22 Aug. 2025

The evidence is consistent and irrefutable that Baltimore’s 80% rate of fatherlessness is connected to the culture of violence therein, and yet few media or community leaders’ outlets are even willing to discuss this. —Ellen Sauerbrey, Baltimore Sun, 18 Aug. 2025

Word History

Etymology

Late Latin irrefutabilis, from Latin in- + refutare to refute

First Known Use

1607, in the meaning defined above

Rhymes for irrefutable

• computable
• disputable
• immutable
• imputable
• inscrutable
• unsuitable
• executable
• indisputable
• substitutable
• mutable
• suitable

Kids Definition

irrefutable

adjective

ir·​re·​fut·​able ˌir-i-ˈfyüt-ə-bəl  (ˈ)ir-ˈ(r)ef-yət- 

: not capable of being proved wrong : indisputable

irrefutable proof

irrefutably

-blē 

adverb