harmfulness harmfully • harmine · · · Info · Definitions · Synonyms · Characters · · harmfulness · · Text Latin · · Script 11 · · Length Definitions · · · (noun) destructiveness that causes harm or injury. Synonyms: injuriousness. · · Noun Definition 1 (noun) the quality of being noxious. Synonyms: noisomeness, noxiousness. · · Noun Definition 2 Synonyms · · · injuriousness · · Synonym 1 noisomeness · · Synonym 2 noxiousness · · Synonym 3 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075