get back at somebody phrasal verb (see also get)
to do something to hurt or harm someone who has hurt or harmed you:
He’ll probably go out with her just to get back at me.

[TahlilGaran] Dictionary of Contemporary English ▲

get back at
to do something bad to someone who has done something bad to you
The girl is angry at her boyfriend and she is getting back at him by not answering the telephone.

[TahlilGaran] English Idioms Dictionary ▲

get back at
v., informal To do something bad to (someone who has done something bad to you) hurt in return.
John played a joke on Henry, and next day Henry got back at him.
The elephant waited many years to get back at the man who fed him red pepper.
Synonym: PAY BACK, SETTLE A SCORE, TIT FOR TAT.
Compare: GET AT², GET EVEN.

[TahlilGaran] English Idioms Dictionary ▲

get back at someone
to do something bad to someone who has done something bad to you
The girl is angry at her boyfriend and she is getting back at him by not answering the telephone.

[TahlilGaran] English Idioms Dictionary ▲