through

Spelling & Dictionary Insight

The English entry for through is 7 letters long, classified as aprep, and transcribed in the International Phonetic Alphabet as /θɹuː/. Corpus data places it at rank #139 in overall English word frequency, putting it firmly in the everyday core of the language.Wiktionary records 14 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 11 documented wrong-spelling variants for through, with forms such as "htrough", "thhrough", and "thorugh". 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 9 confusable-pair relationships, "tough", "trough", "thrush", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English thrugh, thruch, thruh, metathetic variants of thurgh, thurh, from Old English þurh, from Proto-Germanic *þurhw (“through”), from Proto-Indo-European *tr̥h₂kʷe, suffixed zero-grade from *terh₂- (“to pass through”) + *-kʷe (“and”). Cognate… 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 through, spelled T-H-R-O-U-G-H, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.