Arousal from sleep or hibernation.
A physiological and psychological state of being awake or reactive to stimuli, including elevated heart rate and blood pressure and a condition of sensory alertness, mobility and readiness to respond.
The act of arousing or the state of being aroused.
Sexual arousal.
A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis.
Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure.
A very bad or frightening dream.
To have a nightmare.