Sub"tle*ty (?), n.; pl. Subtleties (#). [OE. sotelte, sutilte, OF. sotillete, L. subtilitas. See Subtle, and cf. Subtility.]
The quality or state of being subtle, or sly; cunning; craftiness; artfulness.
The fox which lives by subtlety.
Nice discernment with delicacy of mental action; nicety of discrimination.
Something that is sly, crafty, or delusive.
Unlearned in the world's false subtleties.
© Webster 1913.