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Webster 1913 Edition

Noun.

The state or quality of being airy; openness or exposure to the air;

as, the

airiness

of a country seat

Lightness of spirits; gayety; levity;

as, the

airiness

of young persons

Noun.

Exposure to a free current of air; openness to the air; as, the airiness of a country seat.

Gaiety; levity; as, the airiness of young persons.

airiness ‎(usually uncountable, plural airinesses)