youthful /ˈjuːθfəl/ adjective Learner's definition of YOUTHFUL
[more youthful; most youthful]
1
: having or showing the freshness or energy of someone who is young年轻的;充满活力的;青春的 -
youthful good looks年轻漂亮的面孔
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He's a youthful 50-year-old.他50岁了,却显得非常年轻。
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My grandparents are still very youthful.我的祖父母依旧充满活力。
2
: having or showing the innocence, hope, lack of knowledge, etc., of someone who is young天真的;经验尚浅的;幼稚的
— youthfulness
noun [noncount]