1. characterized by or full of guile; deceitful, cunning, or treacherous

Examples

• The guileful politician made promises he never intended to keep.
• She used a guileful smile to hide her true intentions.
• His guileful tactics eventually caught up with him when the truth came out.
• The con artist's guileful scheme fooled investors for months.
• Despite her guileful nature, she was eventually exposed as a fraud.
• He approached the negotiation with a guileful strategy designed to gain the upper hand.