Source : Webster's Revised Unabridged Dictionary (1913)

Impolite \Im`po*lite"\, a. [L. impolitus unpolishied, pref. im-
   not + politus, p. p. of polire to polish, refine. See
   {Polite}.]
   Not polite; not of polished manners; wanting in good manners;
   discourteous; uncivil; rude. -- {Im`po*lite"ly}, adv. --
   {Im`po*lite"ness}, n.

Source : WordNet®

impolite
     adj : not polite [ant: {polite}]