subtility

== English == === Etymology === From subtile +‎ -ity, from Middle French subtilité, from Latin subtīlitas. See subtle. Doublet of subtlety. === Pronunciation === (UK) IPA(key): /sʌbˈtɪlɪti/ === Noun === subtility (countable and uncountable, plural subtilities) (obsolete) Cunning, craftiness. (obsolete) A cunning scheme; a trick, a con. Excessive refinement of argument; casuistry. A convoluted or refined argument. Fineness; subtlety.