Subtilty

Part of speech: noun (n.)

1. The quality or state of being subtile; thinness; fineness; as, the subtility of air or light.

2. Refinement; extreme acuteness; subtlety. Intelligible discourses are spoiled by too much subtility in nice divisions. Locke.

3. Cunning; skill; craft. [Obs.] To learn a lewd man this subtility. Chaucer.

4. Slyness in design; artifice; guile; a cunning design or artifice; a trick; subtlety. O full of all subtility and all mischief. Acts xiii. 10.