DISAPPOINTMENT
disappointment, dashing hopes
(noun) an act (or failure to act) that disappoints someone
disappointment, letdown
(noun) a feeling of dissatisfaction that results when your expectations are not realized; “his hopes were so high he was doomed to disappointment”
Source: WordNet® 3.1
Etymology
Noun
disappointment (countable and uncountable, plural disappointments)
(uncountable) A feeling of sadness or frustration when a strongly held expectation is not met.
(countable) A circumstance in which a strongly held expectation is not met.
(countable) That which causes feelings of disappointment.
Synonyms
• let-down
Source: Wiktionary
Dis`ap*point"ment, n. Etym: [Cf. F. désappointement.]
1. The act of disappointing, or the state of being disappointed;
defeat or failure of expectation or hope; miscarriage of design or
plan; frustration.
If we hope for things of which we have not thoroughly considered the
value, our disappointment will be greater our pleasure in the
fruition of them. Addison.
In disappointment thou canst bless. Keble.
2. That which disappoints.
Syn.
– Miscarriage; frustration; balk.
Source: Webster’s Unabridged Dictionary 1913 Edition