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 feeling of apprehension, doubt, fear etc.
A prick of the conscience; a moral scruple, a pang of guilt.
A sudden sickly feeling; queasiness.
To have a sickly feeling.