derived from Yiddish, a kadevil is a person, persons, or thing, that interferes in your life or cuts you off just as you are about to get something you are waiting for/ want.

The kadevil is oblivious to the role s/he plays in interfering with your life.
Just as you approach a line for a movie ticket booth, 8 kadevils swoop in and get in front of you at the last minute, forcing you to wait.

A salesperson is about to make a sale, and just as she is closing the deal, the kadevil phone rings, her intended buyer becomes distracted, and the buyer has time to reconsider and decide against the purchase.
by Lizz Davis January 5, 2010
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