vastness vastly • vasty · · · Info · Definitions · Synonyms · Characters · · vastness · · Text Latin · · Script 8 · · Length Definitions · · · (noun) unusual largeness in size or extent or number. Synonyms: enormousness, grandness, greatness, immenseness, immensity, sizeableness, wideness. · · Noun Definition 1 Synonyms · · · enormousness · · Synonym 1 grandness · · Synonym 2 greatness · · Synonym 3 immenseness · · Synonym 4 immensity · · Synonym 5 sizeableness · · Synonym 6 wideness · · Synonym 7 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076