From Longman Dictionary of Contemporary Englishwhupwhup /wʌp/ (also whop) verb (past tense and past participle whupped, present participle whupping) [transitive] informal especially American English 1 BEAT/DEFEATto defeat someone easily in a sport or fight I’m gonna whup your ass (=defeat you very easily).2 to hit someone and hurt them very badly, especially using something such as a belt→ See Verb tableOrigin whup (1800-1900) whip
