1. a person who behaves in a dishonorable or contemptible way; a scoundrel
Usage: somewhat archaic

1. to abuse or revile with harsh language
Usage: archaic

Examples

• The novel’s villain was portrayed as a complete blackguard.
• He called his former business partner a blackguard after the betrayal.
• The blackguard cheated innocent people out of their savings.
• She refused to associate with such a blackguard.
• The angry customer blackguarded the store manager.
• He blackguarded his opponents with vicious insults.