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
Niko	NEE-ko (Finnish)	Finnish, Croatian, Slovene
Bains	[beinz]
Djuradj	-	Serbian
Suhaila	-	Arabic
Ghislaine	zheez-LEN, gee-LEN	French
Bonifacy	baw-nee-FAH-tsi	Polish