Source : Webster's Revised Unabridged Dictionary (1913)

Uppish \Up"pish\, a. [From {Up}.]
   Proud; arrogant; assuming; putting on airs of superiority.
   [Colloq.] --T. Brown. -- {Up"pish*ly}, adv. [Colloq.] --
   {Up"pish*ness}, n. [Colloq.]

Source : WordNet®

uppishness
     n : assumption of airs beyond one's station [syn: {uppityness}]