Evil (adjective)

1. Profoundly immoral and wicked.
2. Harmful, dangerous.

Origin:

Middle english, from old english yfel, from proto-germanic *ubilaz.

Examples:

1. The evil witch cast a spell on the kingdom.
2. The pollution of the river was an evil that the community had to face.
3. The young man's heart was filled with evil thoughts.
4. Evil deeds often go unpunished.
5. Some people believe that the root of all evil is money.