Anxiety

Concern or solicitude respecting some thing or event, future or uncertain, which disturbs the mind, and keeps it in a state of painful uneasiness.

Eager desire.

A state of restlessness and agitation, often with general indisposition and a distressing sense of oppression at the epigastrium.

(psychiatry) a relatively permanent state of worry and nervousness occurring in a variety of mental disorders, usually accompanied by compulsive behavior or attacks of panic

a vague unpleasant emotion that is experienced in anticipation of some (usually ill-defined) misfortune