monarchical

from WordNet (r) 3.0 (2006)

monarchical
    adj 1: having the characteristics of or befitting or worthy of a
           monarch; "monarchical gestures"; "monarchal pomp" [syn:
           {monarchal}, {monarchical}]
    2: ruled by or having the supreme power resting with a monarch;
       "monarchal government"; "monarchical systems" [syn:
       {monarchal}, {monarchical}, {monarchic}]

from The Collaborative International Dictionary of English v.0.48

Monarchic \Mo*nar"chic\, Monarchical \Mo*nar"chic*al\, a. [F.
   monarchique, Gr. ?.]
   Of or pertaining to a monarch, or to monarchy. --Burke. --
   {Mo*nar"chic*al*ly}, adv.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

54 Moby Thesaurus words for "monarchical":
      absolute, aristocratic, authoritarian, autocratic, autonomous,
      bureaucratic, civic, civil, constitutional, democratic, despotic,
      dictatorial, dynastic, fascist, federal, federalist, federalistic,
      governmental, gubernatorial, heteronomous, imperatorial,
      imperatorious, imperial, imperious, kinglike, kingly, majestic,
      matriarchal, matriarchic, monarchal, monarchial, monarchic,
      monocratic, official, oligarchal, oligarchic, parliamentarian,
      parliamentary, patriarchal, patriarchic, pluralistic, political,
      princelike, princely, purple, queenlike, queenly, regal,
      republican, royal, self-governing, sovereign, theocratic,
      totalitarian