Top Definition
Either someone you live with or a guest in your shared house that regularly and consistently steals everyone elses essentials - like bread, milk, toothpaste, toilet paper, shampoo etc, without ever re-paying or replacing.
Steve: Hey d'ya mind if my buddy Craig comes to stay a while?

Greg: No way man. Last time that guy stayed it cost me a fortune, he's a friggin' sential thief!
by sixxon June 19, 2007
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