'Disappointment' definitions:

Definition of 'disappointment'

From: WordNet
noun
A feeling of dissatisfaction that results when your expectations are not realized; "his hopes were so high he was doomed to disappointment" [syn: disappointment, letdown]
noun
An act (or failure to act) that disappoints someone [syn: disappointment, dashing hopes]

Definition of 'Disappointment'

From: GCIDE
  • Disappointment \Dis`ap*point"ment\, n. [Cf. F. d['e]sappointement.]
  • 1. The act of disappointing, or the state of being disappointed; defeat or failure of expectation or hope; miscarriage of design or plan; frustration. [1913 Webster]
  • If we hope for things of which we have not thoroughly considered the value, our disappointment will be greater than our pleasure in the fruition of them. --Addison. [1913 Webster]
  • In disappointment thou canst bless. --Keble. [1913 Webster]
  • 2. That which disappoints.
  • Syn: Miscarriage; frustration; balk. [1913 Webster]