riproarious

An old-fashioned American colloquial adjective meaning wildly hilarious, boisterously funny, or riotously fun. It's an intensified variant of 'uproarious,' with 'rip-' as an emphatic prefix suggesting the kind of laughter that tears you apart. Common in 19th-century American vernacular and frontier speech, it conveys the spirit of a rowdy, over-the-top good time. While largely archaic today, it occasionally resurfaces in humorous or nostalgic writing to evoke that larger-than-life, old-West energy.