diarrhea

Spelling & Dictionary Insight

The English entry for diarrhea is 8 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˌdaɪ.əˈɹiː.ə/. Corpus data places it at rank #13,902 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 9 documented wrong-spelling variants for diarrhea, with forms such as "dairrhea", "ddiarrhea", and "diarhea". 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 Middle English diaria, from Middle French diarrie (French diarrhée), from Late Latin diarrhoea, from Ancient Greek διάρροια (diárrhoia, “through-flowing”), from διά (diá, “through”) + ῥέω (rhéō, “flow”). By surface analysis, dia- + -rrhea. Spelling lat… 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 diarrhea, spelled D-I-A-R-R-H-E-A, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.