assertiveness assertively • assertor · · · Info · Definitions · Synonyms · Characters · · assertiveness · · Text Latin · · Script 13 · · Length Definitions · · · (noun) aggressive self-assurance; given to making bold assertions. Synonyms: self-assertiveness. · · Noun Definition 1 Synonyms · · · self-assertiveness · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076