derisively

"You think you're smart, don't you?" he said derisively to his younger brother.

(Chinese) “你觉得自己很聪明，不是吗？”他对他弟弟嘲讽地说道。

The audience laughed derisively at the actor's poor attempt at a foreign accent.

(Chinese) 观众对演员拙劣的外国口音模仿报以嘲笑。