the chief evil spirit, a supernatural being subordinate to, and the foe of, God, and the tempter of human beings; Satan: typically depicted as a man with horns, a tail, and cloven feet: with the
any evil spirit; demon
a very wicked or malevolent person
a person who is mischievous, energetic, reckless, etc.
an unlucky, unhappy person: that poor devil
anything that is difficult or is hard to operate, control, understand, etc.