sardonic

当朋友声称自己一个周末就读完了普鲁斯特全部作品时，他甩给她一个讥讽的眼神。

He shot his friend a ___sardonic look when she claimed to have read all of Proust in a weekend.

教授挑了挑眉毛，带着讥讽的表情驳回了又一个过于自信的答案。

With a ___sardonic raise of his eyebrow, the professor dismissed yet another overconfident answer.

这位政客做了一番充满讥讽的反驳，言辞中处处透着虚伪的客气。

The politician delivered a ___sardonic rebuttal, his words dripping with feigned politeness.