critical and mocking
mordant - sharp
The formal word ‘mordant’ is derived from the Latin term meaning ‘to bite or sting’. In modern times it is most commonly used in a figurative way to refer to something that is ‘biting’ by being cruel and disparaging, particularly in a darkly humorous way. In some respects, it can be seen as employing wit as a weapon to attack or make fun of somebody or something.
Alice is without guile or tact and her mordant sense of humour often rubs co-workers up the wrong way.
The novel was mordantly funny, with the author taking a darkly satirical view of contemporary life and culture.
I did not appreciate the mordant remarks Frank made about my proposal. His cruelly mocking tone was demeaning and unnecessary.