massiveness massively • massivity · · · Info · Definitions · Synonyms · Characters · · massiveness · · Text Latin · · Script 11 · · Length 4 · · Syllables Definitions · · · (noun) an unwieldy largeness. Synonyms: bulkiness. · · Noun Definition 1 (noun) the property of being large in mass. Synonyms: heft, heftiness, ponderousness, ponderosity. · · Noun Definition 2 Synonyms · · · bulkiness · · Synonym 1 heft · · Synonym 2 heftiness · · Synonym 3 ponderousness · · Synonym 4 ponderosity · · Synonym 5 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 v latin small letter v U+0076