youthfulness

词形变化：

副词: youthfully | 名词: youthfulness |

同义词：

young | childish | juvenile | fresh | callow | boyish | adolescent | kiddish | puerile | maiden | virgin | green | childlike | girlish | young at heart | vigorous | energetic | lively | enthusiastic | active | sprightly | vernal |

反义词：

grown-up | aged |

词义辨析：

同义参见:

adolescence

youth