In a manner that is jointly or mutually aware; with shared or parallel consciousness.
From 'coconscious' (co- plus conscious) with the addition of the adverbial suffix '-ly' (from Old English, used to form adverbs). This creates an adverb describing how something is done with shared awareness.
This adverb captures those strange moments when people act together without planning—finishing each other's sentences or reaching for the same thing simultaneously. It suggests a kind of unspoken coordination.
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