japery japer • Japetus · · · Info · Definitions · Synonyms · Characters · · japery · · Text Latin · · Script 6 · · Length Definitions · · · (noun) acting like a clown or buffoon. Synonyms: buffoonery, clowning, frivolity, harlequinade, prank. · · Noun Definition 1 Synonyms · · · buffoonery · · Synonym 1 clowning · · Synonym 2 frivolity · · Synonym 3 harlequinade · · Synonym 4 prank · · Synonym 5 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 j latin small letter j U+006A p latin small letter p U+0070 r latin small letter r U+0072 y latin small letter y U+0079