impersonate

verb ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about impersonate at Wordnik → Where our words come from →

1. To pretend to be (a different person); to assume the identity of, especially when there is an intent to deceive.

   The conman managed to impersonate several executives.

2. To operate with the permissions of a different user account.
3. To manifest in corporeal form; to personify.