Sŭb'tile-ness, n.
n. The state or quality of being subtile; thinness; rareness; as, the subtileness of air; fineness; acuteness; as, the subtileness of an argument; cunning; artfulness; as, the subtileness of a foe.
n. The state or quality of being subtile; thinness; rareness; as, the subtileness of air; fineness; acuteness; as, the subtileness of an argument; cunning; artfulness; as, the subtileness of a foe.