fiftieth

Spelling & Dictionary Insight

The English entry for fiftieth is 8 letters long, classified as anadj, and transcribed in the International Phonetic Alphabet as /ˈfɪf.ti.əθ/. Corpus data places it at rank #45,371 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.The dominant gloss from Wiktionary reads: "The ordinal form of the number fifty.".

Our Hunspell-derived misspelling index lists 12 documented wrong-spelling variants for fiftieth, with forms such as "ffiftieth", "ffitieth", and "fifftieth". 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, "fifties", "fifteenth", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From earlier fifteth, from Middle English fiftithe, fyftith; equivalent to fifty + -eth. For the modern form, see the etymological notes at twentieth. 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 fiftieth, spelled F-I-F-T-I-E-T-H, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.