get back

verb

Return to where one came from.
“When I get back from holiday, I expect the house to be tidy.”
“He had one hand on the bounce bottle—and he'd never let go of that since he got back to the table—but he had a handkerchief in the other and was swabbing his deadlights with it.”
Reply (to someone); follow up (with someone).
“I'll get back to you on that by Wednesday.”
“Please get back to me about his complaint. ["to" here connotes "reply".]”
To retrieve (something); to have (something) returned.
“I lent her my guitar over the Christmas holidays, and will get it back when the term starts.”
To do something to hurt or harm (someone) who has hurt or harmed one; to take revenge.
“I'll get you back for this!”
“I'll get him back for this!”
To repay; to return the favor.
“People are afraid to let you know how much money they have because they don't want to turn into the “Bank of Michelle.” I can understand that. Don't want to get jacked into a “Hey, can I borrow five hundred bucks till next week dude? I'm a little short. I'll get you back though.””
““Hey, Jade, think I can borrow like twenty bucks? The guy who pays me to clean fish is out of town. Gotta buy some dog food.” I looked at Todd—it had been all of a week since our Roughhouse fight, but I guess the money hadn't lasted. I took a twenty out of my wallet. “Thanks, man. I'll get you back after our next fight.” ”Sure," I said, but I knew the money was as good as gone.”