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.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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