SUB'TILTY, n. L. subtilitas.

1. Thinness fineness exility in a physical sense as the subtilty of air or light the subtilty of sounds.
2. Refinement extreme acuteness.

Intelligible discourses are spoiled by too much subtilty in nice divisions.

3. Slyness in design cunning artifice usually but less properly written subtlety.