1. people who behave in a dishonest or unscrupulous way; scoundrels
Usage: archaic or literary

Examples

• The novel portrayed the pirates as complete blackguards who showed no mercy.
• He called them blackguards for cheating the elderly woman out of her savings.
• The blackguards were finally brought to justice after years of criminal activity.
• She refused to associate with such blackguards and their dishonest schemes.
• The town was plagued by blackguards who preyed on honest merchants.