Top definition
Someone or something that is very annoying, something you can't seem to get rid of.

Pestilent things could be a rat constantly chewing your wires or living in your basement, or a fat seal who won't get off the rock you like.
Damn that guy Omar keeps messaging me. He is so pestilent. Keeps asking me to zorbing with him but I really don't want to. What a pestilent prick.
by ratrarhettehtnrtnntntntn September 06, 2017
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Dec 1 Word of the Day
"Man fuck Donald trump, he wants to build a wall and don't pay taxes!!"
by January 30, 2017
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