To commit an act that is particularly creevish.
How Creevil was it when Chris ate all the chips
by Daniel Winduss December 9, 2007
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Crazy Evil!
Having to do with a person whose actions imply insanity and deviant/devilish harm
My boss is creevil. He starts ranting about random things before noon, screams personal insults at us in front of co-workers and makes a point of firing people during the Holidays.
by Mild Mayhem February 6, 2020
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