EVIL

noun

1. Moral badness; wickedness; malevolence; the forces or behaviors that are the opposite or enemy of good.
2. Something which impairs the happiness of a being or deprives a being of any good; something which causes suffering of any kind to sentient beings; harm; injury; mischief.
3. A malady or disease; especially in the phrase king's evil (scrofula).

adjective

1. Intending to harm; malevolent.
2. Morally corrupt.
3. Unpleasant, foul (of odour, taste, mood, weather, etc.).