thirty thirtieth • thirtyfold · · · Info · Definitions · Synonyms · Characters · · thirty · · Text Latin · · Script 6 · · Length Definitions · · · (noun) the cardinal number that is the product of ten and three. Synonyms: 30, XXX. · · Noun Definition 1 (adj) being ten more than twenty. Synonyms: 30, xxx. · · Adjective Definition 1 Synonyms · · · 30 · · Synonym 1 xxx · · Synonym 2 Characters · · h latin small letter h U+0068 i latin small letter i U+0069 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079