Anticipation or being enthusiastic, is an emotion involving pleasure (and sometimes anxiety) in considering some expected or longed-for good event, or irritation at having to wait. Robert Plutchik listed anticipation as one of the eight basic emotions in his psychoevolutionary theory. See also hope. A name for pleasured anticipation is excitement.
Anticipation can be shown in many ways; for example, some people seem to smile uncontrollably during this period, while others seem ill or sick. It is not uncommon for the brain to be so focused on an event, that the body is affected in such a way. Stage fright is a type of anticipation, stemming from the actor or actress hoping that they perform well.