Used to describe something that brings infamy.
Las acusaciones infamatorias contra el político no solo afectaron su carrera, sino también su reputación personal.
The defamatory accusations against the politician not only affected his career but also his personal reputation.
Las acusaciones infamatorias del periodista causaron un gran escándalo en la comunidad.
The defamatory accusations from the journalist caused a great scandal in the community.