thoroughly

Spelling & Dictionary Insight

The English entry for thoroughly is 10 letters long, classified as anadv, and transcribed in the International Phonetic Alphabet as /ˈθʌɹ.ə.li/. Corpus data places it at rank #6,193 in overall English word frequency, indicating it appears regularly in written and spoken text.The dominant gloss from Wiktionary reads: "In a thorough or complete manner.".

Our Hunspell-derived misspelling index lists 16 documented wrong-spelling variants for thoroughly, with forms such as "htoroughly", "thhoroughly", and "thoorughly". 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 1 confusable-pair relationship, "thorough", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From thorough + -ly. 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 thoroughly, spelled T-H-O-R-O-U-G-H-L-Y, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.