Entry 1 sense Webster, 1913 Impersonator /ĭmˌ-pẽrs'-ən-āt-ẽr/ · Im·per·son·a·tor · IPA /ˌɪmpˈɜrsəneɪtər/ 01 n. One who impersonates; an actor; a mimic. 1. One who impersonates; an actor; a mimic.