Source : Webster's Revised Unabridged Dictionary (1913)

Monarchize \Mon"arch*ize\, v. i. [imp. & p. p. {Monarchized}; p.
   pr. & vb. n. {Monarchizing}.]
   To play the sovereign; to act the monarch. [R.] --Shak.

Monarchize \Mon"arch*ize\, v. t.
   To rule; to govern. [R.]