riotously /ˈɹaɪ.ət.əs.li/ adverb3 •In a riotous manner.The overpowering sense of somebody beyond reach who lived in a world riotously happening only in his own mind. — 1966 •In a manner that causes or involves uncontrollable laughter. •In a degenerate or dissolute manner. formsmore riotously · most riotously