1. Disappointingly unsuccessful
   "disappointed expectations and thwarted ambitions";
   - defeated, discomfited, foiled, frustrated, thwarted, crushed, gutted [Brit, informal]

1. Fail to meet the hopes or expectations of
   "greatly concerned not to disappoint a small child";
   - let down

See also: unsuccessful

Type of: baffle, bilk [informal], cross, foil, frustrate, queer [informal], scotch, scupper [informal], spoil, thwart

Encyclopedia: Disappointed