1. of, relating to, or characteristic of a blackguard; dishonorable, unprincipled, or contemptible in behavior
Usage: archaic; literary

1. in a blackguardly manner; dishonorably or contemptibly
Usage: archaic; literary

Examples

• His blackguardly conduct toward his creditors earned him a reputation as a scoundrel.
• The villain's blackguardly scheme to defraud the widow shocked the entire village.
• He behaved in a blackguardly fashion, abandoning his responsibilities without a second thought.
• Such blackguardly tricks were beneath the dignity of any gentleman.
• The blackguardly treatment of the servants revealed his true character.