affectation
/ˌæfɛkˈteɪʃ(ə)n/
noun
Behavior, speech, or writing that is artificial and designed to impress.
the affectation of a man who measures every word for effect
pretension,pretentiousness,affectedness,artificiality,insincerity,posturing,posing,pretence,ostentation,grandiosity,snobbery,superciliousness