mimic

[1]	imitate , ape , copy , simulate , mirror , echo
[2]	reproduce , mime , duplicate , copy
[3]	mock , ridicule , satirize , caricature , parody , make fun of , lampoon , impersonate , (Colloq) take off

[1]	mimicker
[2]	impersonator , imitator , impressionist , caricaturist , parodist , (Colloq) copycat

adj.

[1]	imitative , imitation , mock , simulated , mimetic , sham , make-believe , pretend(ed) , fake , counterfeit , feigned