The artificial or studied assumption of behaviour; artificiality (of manner); putting on of airs; (also) an instance of this.

Eloquent, elegant, or ornate language, esp. speech or writing expressed in terms calculated to persuade. Frequently depreciative: language…

The act of affecting or assuming artificially; = affectation, n.

spec. A heightened or distinctive style characteristic of the work of a particular artist, writer, etc.

The adoption, to a pronounced or (according to some writers) excessive degree, of a distinctive style, manner, or method of treatment, esp. in…

Pretentious, affected, or upper-class behaviour or language. Also: grand style, luxuriousness, lavishness; smartness, elegance.