To pay back, to return someone a previous good deed.(verb)
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Use "make it up to" in a sentence
"He floated around for about ten years, trying to make it up to me and trying to redeem himself as a nonasshole in my mom’s mind."
"Oswald had a birthday-card or two – that was all; but he did not repine, because he knew they always make it up to you for putting off keeping your birthday, and he looked forward to Saturday."
"The depths of a slaveâ ™ s sexuality, and love, I think, have never been sounded. âShe was cruelly deprived, even so, â he said. âWe will make it up to her, â I said. âOh? â he asked. âWell, perhaps we will, â I said."