mordant - a. 신랄한, 통렬한, 색을 갖게 하는

• incisive
• trenchant

• He was a good speaker, lucid in his lectures, persuasive in conversation; and he had a mordant wit.
• Do not speak mordant words as she is already worried.
• The serious nature of the subject matter is always undercut with Finn 's mordant humor.