pay back in own coin

pay somebody back in their own coin

(British & Australian old-fashioned)

to treat someone in the same bad way that they have treated you I decided to pay her back in her own coin and refuse to help her.

Name	Pronounced	Usage
Eunice	['ju:nis]
Katherina	kath-ə-REE-nə (English), kə-THREE-nə (English), kah-te-REE-nah (German)	English (Rare), German
Brandr	-	Ancient Scandinavian
ŠImun	-	Croatian
Alin	-	Romanian
Dima (1)	-	Arabic