subtilty

Sub"til*ty, n. Etym: [Contr. fr. subtility.] 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. Note: In senses 2, 3, and 4 the word is more commonly written subtlety.

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