"airiest" in the adjective sense
1. aired, airy
open to or abounding in fresh air
2. airy, impractical, visionary, Laputan, windy
not practical or realizable speculative
"airy theories about socioeconomic improvement"
"visionary schemes for getting rich"
having little or no perceptible weight so light as to resemble air
"airy gauze curtains"
4. aeriform, aerial, airy, aery, ethereal
characterized by lightness and insubstantiality as impalpable or intangible as air
"figures light and aeriform come unlooked for and melt away"- Thomas Carlyle
"an airy apparition"
"physical rather than ethereal forms"
Source: WordNet® (An amazing lexical database of English)
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