Definitions for: Blackguardly

[adj] lacking principles or scruples; "the rascally rabble"; "the tyranny of a scoundrelly aristocracy" - W.M. Thackaray; "the captain was set adrift by his roguish crew"

Webster (1913) Definition: Black"guard*ly, adv. & a.
In the manner of or resembling a blackguard; abusive;
scurrilous; ruffianly.

Synonyms: dishonest, dishonorable, rascally, roguish, scoundrelly