1. deceitful behavior; the practice of being dishonest or two-faced

Examples

• The politician’s duplicity was exposed when his private emails contradicted his public statements.
• She was shocked by her friend’s duplicity in spreading rumors while pretending to be supportive.
• The company’s duplicity in hiding safety data led to a major scandal.
• His duplicity made it impossible for anyone to trust him.
• The spy’s duplicity allowed him to work for both sides without detection.
• The contract revealed the lawyer’s duplicity in representing conflicting interests.