swipe right
1. slang To show interest in or approval of someone or something in an app. The phrase was popularized by the dating app Tinder, in which users "swipe right" on the screen to indicate interest in a potential mate. That girl is gorgeous, I'm definitely swiping right. Ooh, this guy's funny—swipe right! I keep swiping right because these dresses are all gorgeous.
2. slang By extension, to accept, agree with, or show enthusiasm for something. A night out instead of studying? I'm swiping right on that.
swipe left
1. slang To decline or reject someone or something in an app. The phrase was popularized by the dating app Tinder, in which users "swipe left" on the screen to reject a potential mate. That girl is pretty—I'm only swiping left because I'm not into blondes. Ugh, this guy's has no sense of humor—swipe left! I keep swiping left because these dresses are all hideous.
2. slang By extension, to reject or decline something. Studying instead of a night out? Definitely swiping left on that.