noun One who imitates or plagiarizes the work of others. .mw-parser-output .defdate{font-size:smaller}
noun A criminal who imitates the crimes of another; specifically, a criminal who commits the same crime, especially a highly-publicized one, that has recently been committed by someone else.
a copycat strangler
adjective Imitative; unoriginal.
copycat crime
verb To act as a copycat; to copy in a shameless or derivative way.