The quality or state of being artificial, pretended, or unnatural in manner or expression.
From 'affected' + '-ness' (quality/state noun suffix). This combines the adjective form (affected—influenced, or feigned) with the '-ness' suffix that creates abstract nouns from adjectives.
There's something fascinating about 'affectedness' as a trait—it's the constant, habitual quality of someone always performing. Psychologists and actors study this: some people live their whole lives in a state of affectedness!
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