subtlety

The quality or state of being subtle.

Something subtle, especially a nicety of thought or a fine distinction.

Same as subtilty, 1.

Acuteness of intellect; delicacy of discrimination or penetration; intellectual activity; subtility.

Same as subtilty, 2.

Slyness; artifice; cunning; craft; stratagem; craftiness; artfulness; wiliness.

Also subtilty.

That which is subtle or subtile. Also subtilty.

That which is intellectually acute or nicely discriminating.

That which is of false appearance; a deception; an illusion.