Having a light, delicate, or ethereal quality; well-ventilated with plenty of fresh air. Can also describe something lacking substance or being impractical.
From Middle English airy, from 'air' plus the suffix '-y'. Originally meant 'of the air' or 'atmospheric' in the 14th century, later developing meanings related to lightness, breeziness, and eventually the figurative sense of being insubstantial.
Airy beautifully demonstrates how physical properties become metaphorical - from describing literal air circulation, it evolved to capture everything from architectural spaces to personalities to ideas that seem to float without weight. It's one of those words that makes abstract concepts feel tangible.
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