high-five

or high five

[ hahy-fahyv ]
/ ˈhaɪˈfaɪv /
Informal.

noun

a gesture of congratulation, solidarity, or greeting in which one person slaps the upraised palm of the hand against that of another.

verb (used with object)

to congratulate, express solidarity with, or greet (a person) with a high-five: I'm such a couch potato that I'd love to high-five the genius who invented remote controls.

verb (used without object)

to exchange high-fives: After pulling out a win, the players noisily high-fived before leaving the court.

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Origin of high-five

First recorded in 1975–80 (five in reference to the five fingers of the hand)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for high-five

high-five
/ slang /

noun

a gesture of greeting or congratulation in which two people slap raised right palms together

verb

to greet or congratulate (a person) in this way
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012