be a dead ringer for somebody

成語所屬單字ringer

be a dead ringer for somebody — 慣用語

1. To look exactly like another person.

1.慣用語
釋義

與某人極其相似

To look exactly like another person.

例句

My cousin is a dead ringer for the actor Tom Hardy.

Have you noticed that the new student is a dead ringer for our teacher?