Disappointing is an adjective used to describe something that fails to meet expectations or hopes, resulting in a feeling of letdown or dissatisfaction. It can refer to a person, event, or situation that falls short of what was anticipated, leaving one feeling disheartened or disillusioned. This feeling of disappointment can be caused by a variety of factors, such as unfulfilled promises, unmet goals, or underwhelming outcomes. It is often accompanied by a sense of sadness or frustration, as one realizes that what they had hoped for did not come to fruition. In short, disappointing is a word that captures the feeling of being let down or dissatisfied by something that was eagerly anticipated.