bummer /(bŭm"ẽr)/

bum·mer

bummer

n.
  1. An idle, worthless fellow, who is without any visible means of support; a loafer; a dissipated sponger; one who bums. [Slang, U.S.]
  2. an unpleasant event, experience, or situation; as, getting caught in a cloudburst while wearing my best suit was a bummer. [Slang, U.S.]