irrefutable
/ˌɪɹɪˈfjuːtəbəl/adjective
irrefutable is spelled I-R-R-E-F-U-T-A-B-L-E: 11 letters and 5 syllables. It appears about once in every 2 million words in written English, the 39,832nd most frequent word form (wordfreq, 2021 data). As an adjective, irrefutable means “undeniable; unable to be disproved or refuted” (English Wiktionary, September 2026).
How many letters and syllables are in irrefutable?
| Letters | 11: I-R-R-E-F-U-T-A-B-L-E |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 39,832nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is irrefutable?
Irrefutable appears about once in every 2 million words in written English, the 39,832nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce irrefutable?
- /ˌɪɹɪˈfjuːtəbəl/
- /ˌɪɹəˈfjuːtəbəl/
- /ɪˈɹɛf(j)ətəbəl/
Irrefutable has 5 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-irrefutable.ogg, En-au-irrefutable.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of irrefutable
- more irrefutable comparative
- most irrefutable superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does irrefutable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
undeniable; unable to be disproved or refuted
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Irrefutable in Spanish, French, German and Portuguese
In the sense undeniable, unable to be disproved:
| Language | Words |
|---|---|
| French | irréfutable, irréfragable |
| German | unwiderlegbar |
| Portuguese | irrefutável |
| Spanish | irrefutable, irrebatible |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does irrefutable come from?
From Late Latin irrefūtābilis, from ir- (“not”) + refūtābilis (“refutable”), from refūtō (“to refute”) + -bilis (“-able”), equivalent to ir- + refutable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).