dictatorially

from WordNet (r) 3.0 (2006)

dictatorially
    adv 1: in an overbearingly domineering manner; as a dictator;
           "this manager acts dictatorially toward his colleagues"
           [syn: {dictatorially}, {autocratically}, {magisterially}]

from The Collaborative International Dictionary of English v.0.48

Dictatorial \Dic`ta*to"ri*al\, a. [Cf. F. dictatorial.]
   1. Pertaining or suited to a dictator; absolute.
      [1913 Webster]

            Military powers quite dictatorial.    --W. Irving.
      [1913 Webster]

   2. Characteristic of a dictator; imperious; dogmatical;
      overbearing; as, a dictatorial tone or manner. --
      {Dic`ta*to"ri*al*ly}, adv. -- {Dic`ta*to"ri*al*ness}, n.
      [1913 Webster]