The quality or state of being foreign; strangeness, unfamiliarity, or the characteristic of belonging to another country or place.
From 'foreign' plus the noun-forming suffix '-ness' from Old English. This creates an abstract noun describing the quality of being foreign.
Philosophers like Heidegger were obsessed with 'foreignness' and 'belonging'—they argued that feeling foreign or out-of-place was actually central to human consciousness, not an accident but part of being aware of oneself.
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