One must be careful when dealing with bad people.

Alternative form of better the devil you know than the devil you don't know

Seek to dispel ill-will before a day’s end, and not to act upon desires for vengeance.

Like a devil; diabolical.

(rare) Without devils.

(mineralogy) A monoclinic-prismatic mineral containing calcium, copper, hydrogen, oxygen, and sulfur.

The reversal of the process of villagization.