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
GÜLay	-	Turkish
Proteus	-	Greek Mythology
RoŽĖ	-	Lithuanian
Saul	SAWL (English)	Biblical, Jewish, Biblical Latin
Tuvya	-	Hebrew
Sophocles	SAHF-u-kleez (English)	Ancient Greek (Latinized)