WordNet (r) 3.0 (2006):

totalitarian
    adj 1: characterized by a government in which the political
           authority exercises absolute and centralized control; "a
           totalitarian regime crushes all autonomous institutions
           in its drive to seize the human soul"- Arthur
           M.Schlesinger, Jr.
    2: of or relating to the principles of totalitarianism according
       to which the state regulates every realm of life;
       "totalitarian theory and practice"; "operating in a
       totalistic fashion" [syn: totalitarian, totalistic]
    n 1: an adherent of totalitarian principles or totalitarian
         government

Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "totalitarian":
   absolute, absolutist, arbitrary, aristocratic, ascendant,
   authoritarian, authoritative, authorized, autocratic, autonomous,
   bureaucratic, civic, civil, clothed with authority, commanding,
   competent, consequential, considerable, constitutional,
   controlling, democratic, despotic, dictatorial, dominant,
   duly constituted, eminent, empowered, ex officio, fascist, federal,
   federalist, federalistic, governing, governmental, great,
   gubernatorial, hegemonic, hegemonistic, heteronomous, illiberal,
   imperative, important, influential, leading, matriarchal,
   matriarchic, mighty, momentous, monarchal, monarchial, monarchic,
   monocratic, monolithic, official, oligarchal, oligarchic,
   oppressive, parliamentarian, parliamentary, patriarchal,
   patriarchic, pluralistic, political, potent, powerful, preeminent,
   prestigious, prominent, puissant, ranking, republican, ruling,
   self-governing, senior, substantial, superior, supreme, theocratic,
   total, tyrannical, undemocratic, unlimited, weighty