pay_back
1. [ verb ] act or give recompensation in recognition of someone's behavior or actions
Synonyms: repay reward
Related terms: act wages
2. [ verb ] take vengeance on or get even
Synonyms: get fix pay_off
Examples:

"We'll get them!" "That'll fix him good!" "This time I got him"

Related terms: get_even pay vengeance
Similar spelling:   payback