Backslapper
Full definition of backslapper
Noun
backslapper
(plural backslappers)- One who makes a show of liking another person with profuse or excessive displays of camaraderie, such as vigorous hand clasping, back-slapping, hearty words of greeting, etc.
Usage notes
Often used at least mildly pejoratively.
Synonyms
- sycophant (always pejorative)