- a vagrant, hobo, tramp, or beggar; specif., a shabby, often drunken derelict
- any shiftless or irresponsible person, loafer, idler, etc.
- a devotee, as of golf or skiing, who devotes so much time to the sport as to disrupt family life, career, etc.
- an incompetent person, esp. an athlete
Origin of bumfrom bummer, probably from German bummler, loafer, habitually tardy person from bummeln, to go slowly, waste time
intransitive verbbummed, bum′ming
- to live as a bum or vagrant
- to live by begging or by sponging off people
- poor in quality: bum cooking
- false, erroneous, or invalid: a bum steer, a bum rap
- lame or ailing: a bum leg
bum someone out
give (or get) the bum's rush
on the bumInformal
- living as a vagrant
- out of repair; broken