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twenty

twenty the cardinal number equivalent to the product of two and ten; ten less than thirty; 20. Recorded from Old English (in form twentig) the word comes from the base of two + -ty.
Twenty questions a parlour game in which a participant has twenty questions (answered by either ‘yes’ or ‘no’) to identify a chosen object. The first recorded reference is in a letter from Hannah More of 1786. In the 20th century, Twenty Questions became the name of a popular radio panel game.
twenty-four seven (usually written 24/7) twenty-four hours a day, seven days a week.
Twenty-six Counties the counties constituting the Republic of Ireland, separated from the Six Counties of Northern Ireland by the peace agreement of 1921–22.
twenty-twenty the Snellen fraction for normal visual acuity, expressed in feet; used informally to denote good eyesight.

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twenty

twen·ty / ˈtwentē/ • cardinal number (pl. -ties) the number equivalent to the product of two and ten; ten less than thirty; 20: twenty or thirty years ago twenty of us stood and waited a twenty-foot aerial. (Roman numeral: xx, XX.) ∎  (twenties) the numbers from twenty to twenty-nine, esp. the years of a century or of a person's life: he's in his late twenties. ∎  twenty years old: he's about twenty. ∎  twenty miles an hour. ∎  a size of garment or other merchandise denoted by twenty. ∎  a twenty-dollar bill. DERIVATIVES: twen·ti·eth / -tēi[unvoicedth]/ ordinal number twen·ty·fold / -ˌfōld/ adj. & adv.

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twenty

twenty OE. twentiġ = OS. twēntig, OHG, zweinzug (G. zwanzig); the first el. is obscure; cf. ON. tuttugu, Goth. twai tigjus; see -TY1.
Hence twentieth (-TH2) OE. twentigoða.

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twenty

twentybatty, bratty, catty, chatty, Cincinnati, Dolcelatte, fatty, flattie, Hattie, natty, patty, ratty, Satie, Scarlatti, scatty, Tati, tattie, tatty •faculty •Alicante, andante, ante, anti, Ashanti, Bramante, Chianti, Dante, dilettante, Fante, Ferranti, infante, scanty, shanty (US chanty), spumante, vigilante, Zante •Asti, pasty •pederasty •Amati, arty, Astarte, castrati, chapatti, clarty, coati, ex parte, Frascati, glitterati, Gujarati, hearty, illuminati, karate, Kiribati, lathi, literati, Marathi, obbligati (US obligati), party, tarty •crafty, draughty (US drafty) •auntie • nasty • contrasty •amaretti, amoretti, Betti, Betty, confetti, cornetti, Donizetti, Getty, Giacometti, Hettie, jetty, machete, Marinetti, Nettie, petit, petty, Rossetti, Serengeti, spaghetti, sweaty, vaporetti, yeti •hefty, lefty •felty, sheltie •penalty • specialty • empty •al dente, aplenty, cognoscenti, divertimenti, lisente, plenty, portamenti, sente, twenty, twenty-twenty •seventy • peasanty •chesty, testy, zesty •Ghiberti

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