Malicious (adjective)

1. Acting with bad or evil intent or actions.
2. Being motivated by a desire to harm or hurt others.
3. Being characterized by malice or desire to harm others.

Origin:

The word "malicious" comes from the latin word "malus" which means "bad" or "evil" and the suffix "-cious" which means "full of". together, it refers to the state of being full of bad or evil intent or actions.

Examples:

1. The hacker had a malicious intent to steal personal information.
2. He had a malicious grin on his face as he watched his rival fail.
3. She was a malicious woman, who delighted in spreading rumors about her friends.
4. The software had a malicious code, it was designed to damage the computer.
5. The prank was malicious, it was intended to cause harm to the victim.