Answer: reciprocate

AnswerCrossword Clue
RECIPROCATEGive as good as one gets
RECIPROCATEEven the score
reciprocate(of a part of a machine) Move backward and forward in a straight line
reciprocateto give and take mutually
reciprocateRespond to (a gesture or action) by making a corresponding one
reciprocateExperience the same (love, liking, or affection) for someone as that person does for oneself