betrayal betray • betrayer · · · Info · Definitions · Synonyms · Characters · · betrayal · · Text Latin · · Script 8 · · Length Definitions · · · (noun) an act of deliberate betrayal. Synonyms: treachery, treason, perfidy. · · Noun Definition 1 (noun) the quality of aiding an enemy. · · Noun Definition 2 Synonyms · · · treachery · · Synonym 1 treason · · Synonym 2 perfidy · · Synonym 3 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079