malicious; spiteful; underhanded
Describes a person, behavior, or atmosphere that is mean-spirited in a sneaky, indirect way. Often used for bullying, harassment, or a gloomy, oppressive mood.
I couldn't stand his underhanded bullying.
I hate the malicious atmosphere at work.
shady and damp
Literal, physical sense: a place that is dark, humid, and unpleasant. Less common than the figurative sense.
This basement is shady, damp, and smells of mold.