Slanderous (adjective)

1. Making or containing false and damaging statements about someone or something.
2. Injurious to reputation or good name.

Origin:

From slander + -ous.

Examples:

1. The gossip spread slanderous rumors about the movie star.
2. The defendant was charged with slanderous statements about the victim.
3. The slanderous comments about the company's product damaged its reputation.
4. The employee was fired for spreading slanderous lies about his colleagues.
5. The political campaign was filled with slanderous accusations against the opposing candidate.