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'Screeched' is often cited as the longest one-syllable word in the English language, but it's just one of the longest. The Oxford English Dictionary lists such other nine-letter, one-syllable words as: stretched, scratched, scrounged, scrunched, scrooched, scritched, straights, and strengths. The OED also cites a single 10-letter word of one syllable: scraunched (meaning "crunched"). It's from a 1620 translation of Cervantes's "Don Quixote."
Source: AskOxford.com, a website produced by Oxford University Press. See:
www.askoxford.com/asktheexperts/faq/aboutwords/onesyllable?view=
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