jerk
slang A rude, contemptible, or worthless person. Gosh, Sarah is such a jerk, you know? I asked her to help me out, and she said she just didn't feel like it! Ugh, they gave Tom the promotion? That jerk thinks he's better than everyone else, but he's totally incompetent.
the jerks
informal Any instance of prolonged involuntary muscle spasms. My wife used to always get the jerks in her legs in bed, which made it very difficult for either of us to get much sleep. I ignored them at first, but as the jerks grew worse and worse along the left side of my body, I began to worry that something could be seriously wrong.
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