Wikipedia says: Disappointment is the emotion felt when a strongly held expectation is not met.
Example: A famous singer promises his fans a concert to remember. People have bought tickets to see the singer live. Personal issues or bad weather causes the concert to be cancelled or postponed indefinitely, leading to disappointment; or say, when parents have a daughter or son whom they expect to succeed in something but the daughter or son proceeds to fail, the parents may be disappointed in them, or if someone organises to go to a nightclub with their friends to celebrate their 18th birthday, highly looking forward to it, and all their friends let them down at the last minute.
And in business when you expect and are expected to make a good presentation and fall way short.
[tags] Disappointment, PR [/tags]