invalid

Spelling & Dictionary Insight

The English entry for invalid is 7 letters long, classified as anadj, and transcribed in the International Phonetic Alphabet as /ɪnˈvæl.ɪd/. Corpus data places it at rank #9,908 in overall English word frequency, indicating it appears regularly in written and spoken text.The dominant gloss from Wiktionary reads: "Not valid; not true, correct, acceptable or appropriate.".

Our Hunspell-derived misspelling index lists 10 documented wrong-spelling variants for invalid, with forms such as "inavlid", "innvalid", and "invaild". 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 also participates in 2 confusable-pair relationships, "inlaid", "invaded", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From in- + valid. 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 invalid, spelled I-N-V-A-L-I-D, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.