in a way that causes disappointment or fails to meet expectations.
The ending of the story was disappointingly predictable.
He played disappointingly in the big game.
✦ Formed by adding the adverbial suffix -ly to the adjective disappointing, which derives from the verb disappoint meaning 'to fail to meet expectations.' Disappoint comes from French desappointer, 'to dispossess or remove from office.'
Past tense and past participle of disappoint.
The sudden storm disappointed the hikers who hoped for clear skies.
Her careless comment deeply disappointed her friend.
to make someone feel sad and unhappy by not doing something that they hoped or expected you to do
The rainy weather disappointed everyone at the outdoor party.
'Please don't disappoint me again,' the teacher said to the student.
✦ From late Middle English, alteration of French desappointer ‘to dispossess of an appointed position,’ from des- ‘reversal’ + apointer ‘to appoint,’ from Latin ad ‘to’ + punctum ‘point.’
