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1.
a woman who is good at stealing men already spoken for. a woman who may or may not be in the process of luring a man into an affair.
Rebecca thought that Jillian's repeated requests to "share audio files" with her fiancee Tyrone was something that only a very skilled usurper would think to do.
by major_delmac March 10, 2005
38 22
 
2.
chriskaye; one who plays tricks on the others
Chris Kaye is a usurper.
by El_Scorcho August 27, 2003
24 24
 
3.
Someone who steals your free time and replaces it with work or tedious conversation, often when he/she is unaware of doing it. Typically either someone deceptively nice (so you feel guilty about walking away), or your boss (so you can't leave).
Friend 1: Hey are you coming fishing on Saturday?

You: I'd like to, but before I leave the office my boss will

probably ask me to come in and work over the weekend. He's a usurper.

Boss: Hi, Peter. What's happening? We need to talk about your TPS reports.
by g-a-d May 06, 2011
4 7