adjective
snide
SNYDE/snaɪd/
Mocking or insulting in an indirect way.
The participant gives a snide thumbs-up while smirking at the lopsided pot.

Etymology
Its origin is unknown, but earlier meanings included “sham” and “contemptible.” The later sense of sneering may have developed through a noun use meaning “hypocrisy” or “malicious gossip.”
In context
Please stop making snide remarks, and acting so passive- aggressive. What exactly did I do to offend you? You know what you did.
More examples
- He makes snide remarks about how little I earn.
- “Nice of you to finally help,” she says with a snide smile.
- The review is snider than it needs to be.
Forms
snide · snider · snidest
snidely adverb — In an indirectly mocking or insulting way.
snideness noun — An indirectly mocking or insulting attitude.