From Middle English air ("gas, atmosphere"), from Anglo-Norman aeir, eyer, Old French aire, eir, from Latin āēr, from Ancient Greek ἀήρ ("wind, atmosphere"). Displaced native Middle English luft ("air") (from Old English lyft ("air, atmosphere")), Middle English loft ("air, upper region") (from Old Norse lopt ("air, sky, loft")). More at lift, loft.
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