brilliancy brilliance • brilliandeer · · · Info · Definitions · Synonyms · Characters · · brilliancy · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a quality that outshines the usual. Synonyms: luster, lustre, splendor, splendour. · · Noun Definition 1 Synonyms · · · luster · · Synonym 1 lustre · · Synonym 2 splendor · · Synonym 3 splendour · · Synonym 4 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 y latin small letter y U+0079