whop v. + Add to list UK //wˈɒp// whop Informal Slang SynonymsEtymology Synonyms BASHbonkbopsockwallopwhackwhamwhapOriginMEwhappen→ENwhop From Middle English whappen, a variant of wappen (“to strike; fling; shoot; stun”), probably of imitative origin. Compare Old Norse vappa (“to waddle”).