In an airy manner; in a light, casual, or dismissive way; in a breezy or spacious manner.
From 'airy' with adverbial suffix '-ly' (from Old English '-lice'). Standard adverbial formation that adds the sense of manner to adjectives.
When someone speaks 'airily' about their problems, they're using lightness as emotional armor—linguists call this 'affectual distancing,' and it's a dead giveaway that something serious is being minimized.
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