disappoint
[verb]
Synonyms: let down, disenchant, disgruntle, dishearten, disillusion, dismay, dissatisfy, fail

[TahlilGaran] English Synonym Dictionary ▲

dis‧ap‧point W3 /ˌdɪsəˈpɔɪnt/ verb [intransitive and transitive]
[Word Family: adjective: disappointed, disappointing; verb: disappoint; noun: disappointment; adverb: disappointingly]
[Date: 1400-1500; Language: Old French; Origin: desapointier, from apointier 'to arrange']

1. to make someone feel unhappy because something they hoped for did not happen or was not as good as they expected:
I hated to disappoint her.
Great things were expected of this band, and they didn’t disappoint.

2. disappoint sb’s hopes/expectations/plans to prevent something from happening that someone hoped for or expected:
The Berlin settlement of 1878 disappointed Russian hopes in the Balkans.

[TahlilGaran] Dictionary of Contemporary English ▲