What does it mean to be impassive?

Being impassive refers to a state in which an individual displays little to no emotion or sensibility. This quality suggests a level of emotional restraint or the ability to remain calm and indifferent, regardless of the situation. The term often implies that a person remains unperturbed or unaffected by outside stimuli, showing little to no visible reaction to events that would typically elicit emotional responses. In various contexts, such as psychology or literature, this characteristic can be significant as it reflects a person's internal state in the face of challenges or emotional situations. The other options present contrasting features, such as showing enthusiasm or a cheerful disposition, which do not align with the definition of being impassive.