<unk>  is the feeling of dissatisfaction that follows the failure of expectations to manifest. Similar to regret, it differs in that the individual feeling regret focuses primarily on personal choices contributing to a poor outcome, while the individual feeling<unk>  focuses on outcome. It is a source of psychological stress. The study of<unk> —its causes, impact and the degree to which individual decisions are motivated by a desire to avoid it—is a focus in the field of decision analysis, as<unk>  is one of two primary emotions involved in decision-making.
Disappointment
Work aversion
Homicidal ideation
Emotional detachment
Jealousy
Labile affect
Blunted affect
Disgust