used to describe behaviour or characteristics that are like those of a boy

a boyish grin 男孩子气的一笑

She had her hair cut in a boyish style. 她剪了个男孩的发型。

Even as an old man he retained his boyish charm. 即使老了，他依然保留着那份童真。

She found his boyish good looks very attractive. 她觉得他那孩子气的漂亮外表很迷人。