The DICT Development Group

  87 Moby Thesaurus words for "impertinent":
     adrift, arrogant, audacious, beside the mark, beside the point,
     beside the question, biggety, bluff, bold, brash, brassy, brazen,
     bumptious, busy, busybody, challenging, cheeky, chutzpadik, cocky,
     contemptuous, crusty, daring, defiant, defying, derisive,
     discourteous, disdainful, disregardful, disrespectful, extraneous,
     extrinsic, facy, flip, flippant, foreign, forward, fresh, gally,
     gratuitous, greatly daring, immaterial, impolite, impudent,
     inadmissible, inapplicable, inapposite, inappropriate, incidental,
     inconsequent, inquisitive, insolent, interfering, intrusive,
     irrelative, irrelevant, malapert, meddlesome, meddling, nervy,
     nihil ad rem, nonessential, nosy, not at issue, obtrusive,
     off the subject, offensive, officious, out-of-the-way,
     parenthetical, pert, presumptuous, prying, pushing, pushy,
     regardless of consequences, rude, sassy, saucy, self-appointed,
     smart, smart-alecky, smart-ass, snoopy, uncalled-for, uncivil,
     unessential, wise-ass