A malicious coward; a dishonorable sneak.
Meanly shrinking from danger, cowardly, dastardly.
To dastardize.
One who stays where they cannot be seen (often in a cowardly way or with the intent of doing harm).
One who moves in a stealthy or furtive way; one who comes or goes while trying to avoid detection.
One who avoids an obligation or responsibility.