The DICT Development Group

  Tipsy \Tip"sy\, a. [Compar. Tipsier; superl. Tipsiest.]
     [Akin to tipple; cf. Prov. G. tips drunkenness, betipst
     drunk, tipsy. See Tipple.]
     1. Being under the influence of strong drink; rendered weak
        or foolish by liquor, but not absolutely or completely
        drunk; fuddled; intoxicated.
        [1913 Webster]
  
     2. Staggering, as if from intoxication; reeling.
        [1913 Webster]
  
              Midnight shout and revelry,
              Tipsy dance and jollity.              --Milton.
        [1913 Webster]

  tipsy
      adj 1: slightly intoxicated [syn: potty, tiddly, tipsy]
      2: unstable and prone to tip as if intoxicated; "a tipsy boat"

  77 Moby Thesaurus words for "tipsy":
     addled, aslant, aslope, atilt, beery, bemused, besotted, bevel,
     beveled, bias, biased, blind drunk, boozy, canting, careening,
     crapulent, crapulous, dazed, dizzy, drenched, drunk, drunken,
     far-gone, flustered, fou, full, gay, giddy, glorious, happy,
     in liquor, inclinational, inclinatory, inclined, inclining,
     inebriate, inebriated, inebrious, intoxicated, jolly, leaning,
     listing, maudlin, mellow, merry, muddled, nappy, oiled,
     out of plumb, out of square, pitched, raking, recumbent, reeling,
     shelving, shelvy, shikker, sideling, sidelong, slant, slanted,
     slanting, slantways, slantwise, sloped, sloping, sodden, sotted,
     stewed, tiddly, tight, tilted, tilting, tipped, tipping,
     under the influence, unsteady