infallible

Spelling & Dictionary Insight

The English entry for infallible is 10 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ɪnˈfæl.ɪ.bl̩/. Corpus data places it at rank #28,253 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.The dominant gloss from Wiktionary reads: "A person who, or an object or process that, is taken as being infallible.".

Our Hunspell-derived misspelling index lists 14 documented wrong-spelling variants for infallible, with forms such as "ifnallible", "inafllible", and "infalible". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Medieval Latin infallibilis, from Latin in- + fallibilis. Compare French infaillible. By surface analysis, in- + fallible. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is infallible, spelled I-N-F-A-L-L-I-B-L-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.