DictionarybumPoor quality
adjective / verb

bum

Impaired or in unsatisfactory condition.

A bum knee keeps her off the tennis court.

Etymology

Bum developed from bummer. The unfavorable description of a person extended to things or body parts in poor condition.

More examples

  • The canceled trip really bummed him out.
  • They sold us a bum radio that never worked.
  • I felt bummed after missing the concert.

Forms

bum · bums · bummed · bumming

Similar words

faulty
A neutral term for not working properly, without bum's informal tone.