ēthŏlŏgus, i, m., = ἠθολόγος,
one who jestingly imitates the manners , actions , gestures , etc., of others , a mimic : mimus, Cic. de Or. 2, 59, 242; 2, 60, 244.
ēthologus adj. , ἠθολόγος, imitating manners, mocking personal peculiarities: mimi. ...
An Elementary Latin Dictionary