成りすます

なりすます

to pose as; to (successfully) impersonate; to pretend to be; to pass oneself off as

Also written 成り済ます、なり済ます、成済ます

Meaning

v5svi
to pose as; to (successfully) impersonate; to pretend to be; to pass oneself off as; to disguise oneself as
v5svi
to (completely) become; to (fully) turn into

Example sentences

彼はその酒場で歯医者に成りすましていた。

He posed as a dentist at that bar.
警備員に成りすまして彼は銀行に入った。

He went into the bank in the disguise of a guard.