Synonyms of 'pay someone back'
▷ See pay
get even withDictionary, punish, repay
It was her chance to pay him back for humiliating her.
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If you retaliate when someone harms or annoys you, you do something which harms or annoys them in return.
I was sorely tempted to retaliate.
get even with (informal)
get your own back (informal)
give as good as you get (informal)
take an eye for an eye
give (someone) a taste of his or her own medicine
give tit for tat
return like for like
Thesaurus for pay someone back from the Collins English Thesaurus