roister Roist • roisterer · · · Info · Definitions · Synonyms · Characters · · roister · · Text Latin · · Script 7 · · Length Definitions · · · (verb) engage in boisterous, drunken merrymaking. Synonyms: carouse, riot. Example: "They were out carousing last night." · · Verb Definition 1 Synonyms · · · carouse · · Synonym 1 riot · · Synonym 2 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074