To dastardize.
A malicious coward; a dishonorable sneak.
Meanly shrinking from danger, cowardly, dastardly.
To have a nightmare.
Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure.
A very bad or frightening dream.
A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis.