finasteride

Spelling & Dictionary Insight

The English entry for finasteride is 11 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /fɪnˈæs.təɹ.aɪd/. Corpus data places it at rank #82,295 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "A medication used to treat male pattern baldness and benign prostatic hyperplasia in males.".

No misspelling variants are generated for finasteride in our index, suggesting the orthography follows predictable English patterns. 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 fina (“possibly a coined pharmaceutical name developed by scientists at Merck”) + -steride (“a testosterone reductase inhibitor”). First use appears c. 1989 in the publication Pharmaceutical Business News. 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 finasteride, spelled F-I-N-A-S-T-E-R-I-D-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.