The Collaborative International Dictionary of English v.0.48:

Cursory \Cur"so*ry\ (k?r"s?-r?), a. [L. cursorius, fr. cursor.
   See Cursor.]
   1. Running about; not stationary. [Obs.]
      [1913 Webster]

   2. Characterized by haste; hastily or superficially
      performed; slight; superficial; careless.
      [1913 Webster]

            Events far too important to be treated in a cursory
            manner.                               --Hallam.
      [1913 Webster]

WordNet (r) 3.0 (2006):

cursory
    adj 1: hasty and without attention to detail; not thorough; "a
           casual (or cursory) inspection failed to reveal the
           house's structural flaws"; "a passing glance";
           "perfunctory courtesy" [syn: casual, cursory,
           passing(a), perfunctory]

Moby Thesaurus II by Grady Ward, 1.0:

117 Moby Thesaurus words for "cursory":
   airy, ankle-deep, at odds, averse, brief, careless, casual, degage,
   depthless, desultory, differing, disagreeing, disinclined,
   disobedient, disregardant, disregardful, easygoing, epidermal,
   expeditious, fast, festinate, feverish, few, flippant, flying,
   footling, forced, forgetful, fractious, free and easy, furious,
   haphazard, hasty, heedless, hurried, immediate, inconsequential,
   inconsiderable, inconsiderate, indifferent, indisposed, indocile,
   insignificant, insouciant, instant, involuntary, jejune, knee-deep,
   last-minute, lazy, light, little, low, meager, miniature, mutinous,
   negligible, no great shakes, not deep, oblivious, offhand,
   on the spot, on the surface, opposed, passing, perfunctory, petty,
   picayune, picayunish, prompt, quick, random, rapid, recalcitrant,
   reckless, refractory, regardless, resistant, respectless, shallow,
   shallow-rooted, shoal, short, sketchy, skin-deep, slap-bang,
   slapdash, slight, small, snap, speedy, sulky, sullen, summary,
   superficial, surface, swift, tactless, thin, thoughtless, tiny,
   trifling, trivial, unconsenting, uncritical, undiplomatic,
   unheedful, unheeding, unmindful, unprepared, unprofound, unready,
   unsolicitous, untactful, unthinking, unwilling, urgent