airs and graces: (depreciative) affected manners intended to convey a person's elegance, refinement, or (later) superiority; affectations…

the state or condition of being a fine lady; the manners or behaviour characteristic of fine ladies; (also) an instance or manifestation of this.

Social superiority as shown by behaviour, appearances, manners, etc.; genteel nature or quality. Frequently (esp. in later use) depreciative…

that which is characteristic of a gent (see gent, n.2 1b); vulgarity, showiness.

Affectedly polite or refined behaviour, attitudes, or characteristics, esp. when intended as a sign of superior social status.

(see quot.).

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

= refinement, n. 3.