bumptious

from WordNet (r) 3.0 (2006)

bumptious
    adj 1: offensively self-assertive [syn: {bumptious}, {self-
           assertive}]

from The Collaborative International Dictionary of English v.0.48

Bumptious \Bump"tious\, a.
   Self-conceited; forward; pushing. [Colloq.] --Halliwell.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

54 Moby Thesaurus words for "bumptious":
      aggressively self-confident, arrogant, audacious, biggety, brassy,
      brazen, challenging, cheeky, chesty, cocky, cold, conceited,
      contemptuous, contumelious, cool, daring, defiant, defying,
      derisive, disdainful, disregardful, familiar, forward,
      greatly daring, hubristic, immodest, impertinent, impudent,
      insolent, insulting, know-it-all, obtrusive, overpresumptuous,
      overweening, overwise, peacockish, peacocky, perk, perky, pert,
      presuming, presumptuous, procacious, puffed up, pushy,
      regardless of consequences, saucy, self-conceited,
      self-opinionated, smart-alecky, stuck-up, swelled-headed, uppish,
      uppity