impersonate
verb
she tried to impersonate her boss:
imitate, mimic, do an impression of, ape;
parody, caricature, burlesque, travesty, mock, satirize, lampoon;
masquerade as, pose as, pass oneself off as, profess to be, purport to be, represent oneself as;
informal take off, do, spoof, send up;
North American, informal make like;
archaic monkey;
rare personate.
impersonate Oxford Dictionary of English