high fiving

Verb

high five (third-person singular simple present high fives, present participle high fiving, simple past and past participle high fived)

1. (transitive) To slap high fives.
   • Like a lot of my fellow passengers — indie-rock fans who had signed up for a three-day voyage full of bands and beverages — I’d never been on a cruise before. So I don’t know whether most of them begin with a staff member high-fiving each and every person who comes off the gangway.2012 March 30, Joe Levy, “Rockers at Sea”, in The New York Times

See all 4 meanings of high five