Monarchical state (7)
I believe the answer is:
kingdom
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">monarchical state</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for kingdom that I've seen before include "Domain of royal ruler" , "Country with royal head of state" , "Republic? Not so!" , "Major category of biological classification" , "Domain of a monarch" .)