Plural of classicality; the qualities, characteristics, or instances of being classical or adhering to classical principles.
From 'classical' + '-ity' (quality or state) + '-ies' (plural). This suffix sequence creates an abstract noun describing properties of classicism.
When art critics debate 'classicalities,' they're really arguing about whether something has that ineffable quality of 'classicalness'—it's subjective, which is why philosophers and aestheticians love this word as they wrestle with what makes something timelessly classical.
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