See also: Woop Woop English Etymology Perhaps derived from whoopee or whoot. Pronunciation Audio (US):(file) Interjection woop woop (Internet slang, leetspeak) Used to express joy, particularly that felt during success or victory. Synonyms: see Thesaurus:yay Alternative spelling of Woop Woop.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads