Something or someone that disappoints: that which causes disappointment.
An example or the act of disappointing: a circumstance in which a positive expectation is not achieved.
The feeling or state of being disappointed: a feeling of sadness or frustration when something is not as good as one hoped or expected, or when something bad unexpectedly happens.
Dissatisfaction.
A longing for better times or circumstances.
A discontented person; a malcontent.
To deprive of contentment; to make uneasy; to dissatisfy.
Not content; discontented; dissatisfied.