noun

1. An unpleasant state of mental uneasiness, nervousness, apprehension and obsession or concern about some uncertain event.

2. An uneasy or distressing desire (for something).

3. A state of restlessness and agitation, often accompanied by a distressing sense of oppression or tightness in the stomach.

Synonyms: apprehension, care, disquiet, disquietude, distress, foreboding, perplexity, restlessness