affectation

/ˌæfɛkˈteɪʃən/
noun
  1. Behavior, speech, or writing that is artificial and designed to impress others.
    • She found his constant use of fancy words to be a silly affectation.
    • His British accent was an affectation he picked up from watching too many movies.
    • The artist's affectation of poverty seemed fake since he drove an expensive car.
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