Subtilty /(?)/

Sub·til·ty

Subtilty

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.
  3. Cunning; skill; craft. [Obs.]
    To learn a lewd man this subtility.
  4. Slyness in design; artifice; guile; a cunning design or artifice; a trick; subtlety.
    O full of all subtility and all mischief.