1. secretly planning or plotting something dishonest or harmful

Examples

• The conniving employee stole company secrets to sell to competitors.
• She gave him a conniving smile before revealing her plan.
• The conniving politician made secret deals behind closed doors.
• His conniving nature made it hard for others to trust him.
• The conniving stepmother plotted against her stepchildren.
• They discovered the conniving scheme just in time to stop it.