irrefragable
/ɪˈɹɛfɹəɡəb(ə)l/
"irrefragable" is a 12-letter English headword indexed on PlainSpell.
The verdict
“irrefragable” is outside the top-ranked English vocabulary, used as an adjective - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Which cannot be refuted; clearly right, incontrovertible, indisputable, irrefutable.
| Property | Value |
|---|---|
| Headword | irrefragable |
| Language | English |
| Part of speech | Adjective |
| IPA | /ɪˈɹɛfɹəɡəb(ə)l/ |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “irrefragable” sits in English frequency
Spelling & Dictionary Insight
The English entry for irrefragable is 12 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ɪˈɹɛfɹəɡəb(ə)l/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Zero misspellings are on record for irrefragable in our index, typically a sign the spelling maps closely to how the word sounds. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: Learned borrowing from Late Latin irrefrāgābilis (“irrefragable”) + English -able (suffix forming adjectives with the sense ‘able or fit to be done’). Irrefrāgābilis is derived from Latin ir- (variant of in- (prefix meaning ‘not’)) + refrāgārī + -bilis (suf… The correct English form is irrefragable, spelled I-R-R-E-F-R-A-G-A-B-L-E.
Definition
- 1Which cannot be refuted; clearly right, incontrovertible, indisputable, irrefutable.
- 2Which cannot or should not be broken; indestructible.
- 3Of a person: obstinate, stubborn.
Etymology
Learned borrowing from Late Latin irrefrāgābilis (“irrefragable”) + English -able (suffix forming adjectives with the sense ‘able or fit to be done’). Irrefrāgābilis is derived from Latin ir- (variant of in- (prefix meaning ‘not’)) + refrāgārī + -bilis (suffix forming adjectives indicating a capacity or worth of being acted upon); while refrāgārī is the present active infinitive of refrāgor (“to oppose, resist; to gainsay, thwart”) (further etymology uncertain, possibly from re- (prefix meaning ‘again’) + fragor (“a breaking, shattering; a crash; din, uproar”) (from frangō (“to break, shatter”), ultimately from Proto-Indo-European *bʰreg- (“to break”))), formed as an antonym of suffrāgōr, the first-person singular present passive indicative of suffrāgō (“to support; to vote for”).
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “irrefragable”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-R-R-E-F-R-A-G-A-B-L-E - every other letter order is a misspelling in standard orthography.
- Say it as /ɪˈɹɛfɹəɡəb(ə)l/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.