v.tr.
1. (also absol.) fail to fulfil a desire or expectation of (a person).
2 frustrate (hopes etc.); cause the failure of (a plan etc.).
Phrases and idioms:
be disappointed (foll. by with, at, in, or to + infin., or that + clause) fail to have one's expectation etc. fulfilled in some regard (was disappointed with you; disappointed at the result; am disappointed to be last).
Derivatives:
disappointedly adv. disappointing adj. disappointingly adv.
Etymology: ME f. F d{eacute}sappointer (as DIS-, APPOINT)