Excessive refinement of argument; casuistry.(noun)
A convoluted or refined argument.(noun)
Fineness; subtlety.(noun)
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Use "subtility" in a sentence
"Such a subtility is a dear proof of the falshood, as the contrary simplicity of the truth, of any system."
"+ The fourth quality is "subtility", by which the body becomes subject to the absolute dominion of the soul."
"The movie has been out in France for quite a few months and even if the story is lacking any subtility (but who cares) you have to admit that the action delivers big time!"