airiness
air-i-ness
noun
A quality of being light-hearted, cheerful, or carefree in manner.
"Her airiness brightened the mood."
noun
The quality of being light, spacious, and well-ventilated.
"The room's airiness made it feel larger."
noun
The quality of being light, delicate, and often fluffy in texture.
"The cake's airiness was delightful."