The quality or state of being ordinary, routine, and unremarkable; the essence of ordinary daily life.
From 'everyday' (Middle English, from 'every' and 'day') plus '-ness' (Old English suffix forming abstract nouns). The concept evolved to describe the philosophical quality of the mundane.
Philosophers and artists obsess over everydayness—artists like Andy Warhol made soup cans famous by celebrating everydayness, teaching us that the ordinary is actually fascinating if you look closely!
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