youthfulness youthfully • youthhead · · · Info · Definitions · Synonyms · Characters · · youthfulness · · Text Latin · · Script 12 · · Length 3 · · Syllables Definitions · · · (noun) the freshness and vitality characteristic of a young person. Synonyms: youth, juvenility. · · Noun Definition 1 Synonyms · · · youth · · Synonym 1 juvenility · · Synonym 2 Characters · · 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 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079