derisive

The bully gave a derisive laugh when the boy tripped and dropped his books.

(Chinese) 当那个男孩绊倒并掉落书本时，欺凌者发出了嘲弄的笑声。

She dismissed his apology with a derisive wave of her hand, refusing to listen further.

(Chinese) 她轻蔑地挥了挥手，拒绝听他进一步的道歉。