Imitative; unoriginal.
One who imitates or plagiarizes others' work.
A criminal who imitates the crimes of another; specifically, a criminal who commits the same crime, especially a highly-publicized one, that has just been or recently committed by someone else.
To act as a copycat; to copy in a shameless or derivative way
Imitative of a sound; onomatopoeic.
Of or pertaining to an echo