Source : Webster's Revised Unabridged Dictionary (1913)

Pretentious \Pre*ten"tious\, a. [Cf. F. pr['e]tentieux. See
   {Pretend}.]
   Full of pretension; disposed to lay claim to more than is
   one's; presuming; assuming. -- {Pre*ten"tious*ly}, adv. --
   {Pre*ten"tious*ness}, n.

Source : WordNet®

pretentious
     adj 1: making claim to or creating an appearance of (often
            undeserved) importance or distinction; "a pretentious
            country house"; "a pretentious fraud"; "a pretentious
            scholarly edition" [ant: {unpretentious}]
     2: intended to attract notice and impress others; "an
        ostentatious sable coat" [syn: {ostentatious}] [ant: {unostentatious}]
     3: of a display that is tawdry or vulgar [syn: {ostentatious},
        {kitsch}]