noun.
One who imitates others' work without adding ingenuity.
adjective.Imitative; unoriginal.
verb.
To act as a copycat; to copy in a shameless or derivative way
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
someone who copies the words or behavior of another
Word Usage
"One is that they didn't want to give people ideas -- here's a new, neat, you know, weapon you can build from the Internet, so we get a bunch of people out there that are, to use the term copycat, who say, you know, I'll do something similar."