The quality of being like air or made of air; insubstantiality, physical lightness. Also: vagueness, abstraction.

Lack of substance, strength, thoroughness, etc.

Emptiness, vanity; insincerity, falseness.

Lack or want of subsistence.

Lack of solidity or physical existence. Obsolete. rare.

The quality, state, or condition of being dreamy; (now esp.) haziness, ethereality; (also) abstractedness, absent-mindedness.

The quality of being unsubstantial; insubstantiality.

The quality of being insubstantial; unsubstantiality.

Aerial quality; airiness; insubstantiality.

thinness, tenuity.

The condition of being shimmery; a flickering or insubstantial quality.