disappointment
n. C / Un. the sad feeling you have when something you hoped for does not happen. It can also describe a person or thing that is not as good as you expected.
n. the feeling of sadness or dissatisfaction caused by the non-fulfilment of one's hopes or expectations. It may also refer to a person, event, or thing that fails to meet a specific standard.
The cancellation of the trip was a huge disappointment.
She tried to hide her disappointment when she learned she didn't get the job after the final interview.
The film's critical failure was a bitter disappointment to the director, who had spent years securing the necessary funding and assembling a world-class cast.
From disappoint + -ment.
Uncountable when referring to the emotion itself; countable when referring to a specific person or event that causes the feeling.
I am disappointment with youI am disappointed with youLearners often use the noun 'disappointment' where the adjective 'disappointed' is required to describe a person's state.