WordNet (r) 3.0 (2006):

totalitarianism
    n 1: a form of government in which the ruler is an absolute
         dictator (not restricted by a constitution or laws or
         opposition etc.) [syn: dictatorship, absolutism,
         authoritarianism, Caesarism, despotism, monocracy,
         one-man rule, shogunate, Stalinism,
         totalitarianism, tyranny]
    2: the principle of complete and unrestricted power in
       government [syn: absolutism, totalitarianism, totalism]