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1. Someone who has no clue what they are doing.

2. An abbreviation used to describe an incompetent person, particularly someone in a service related industry.

3. A person who is of no help.

"That cashier is an incomp"

"That store was staffed with incomps"

"I'm tired of dealing with these incomps on the phone"
by Len Silv. September 23, 2008
an incompetent person who has no mental disabilities yet still struggles with simple everyday tasks and has no common sense.
1. Damn that kid who didn't know that it took 9 months to create a baby was an incomp.
2. That incomp took forever to get ready when all he had to do was get dressed and walk downstairs.
by irving zistman July 21, 2013