1. the quality or state of being deceitful, cunning, or treacherous; the use of clever tricks to deceive or manipulate
Usage: formal; often used to describe dishonest or manipulative behavior

Examples

• The politician's guilefulness was evident in how he twisted the facts to suit his agenda.
• She approached the negotiation with guilefulness, carefully concealing her true intentions.
• His guilefulness made it difficult for others to trust him.
• The con artist's guilefulness allowed him to deceive investors for years.
• Despite her friendly demeanor, there was an underlying guilefulness in her words.
• The detective recognized the suspect's guilefulness and pressed harder during questioning.