prolong

Spelling & Dictionary Insight

The English entry for prolong is 7 letters long, classified as averb, and transcribed in the International Phonetic Alphabet as /pɹəʊˈlɒŋ/. Corpus data places it at rank #22,183 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 4 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 prolong, with forms such as "porlong", "pprolong", and "prloong". 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 7 confusable-pair relationships, "prong", "proton", "proving", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: Either a back-formation from prolongation, or from Old French prolonguer or porloignier, from Latin prōlongō, from prō + longō. Doublet of purloin. 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 prolong, spelled P-R-O-L-O-N-G, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.