An unpleasant state of mental uneasiness, nervousness, apprehension and obsession or concern about some uncertain event.
An uneasy or distressing desire (for something).
A state of restlessness and agitation, often accompanied by a distressing sense of oppression or tightness in the stomach.
A fearful state; a state of concern or hesitation.
An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear.