adj.頑皮的；淘氣的；不妥的

His dog scared that naughty boy away. 他的狗把那個頑皮的孩子嚇走了。

You naughty boy! I've told you not to play in the street. 你這頑皮孩子！我說過，叫你別在馬路上玩。

This naughty boy is really troublesome. 這個淘氣的男孩子真是惹人煩。

The naughty boy hid the books in the shrub. 這個淘氣的孩子把書藏在了灌木叢里。

It was naughty of Father to stay out so late. 爸爸在外面待到很晚是不對的。