1. in a dishonest or lying manner
Usage: formal

Examples

• The witness testified mendaciously, providing false information to the court.
• He mendaciously claimed to have graduated from Harvard when he had never attended.
• The politician mendaciously denied any involvement in the scandal.
• She mendaciously told her parents she was studying when she was actually at a party.
• The company mendaciously advertised their product as completely safe.
• He mendaciously promised to repay the loan, knowing he had no intention of doing so.