Source : Webster's Revised Unabridged Dictionary (1913)

Acquiet \Ac*qui"et\, v. t. [LL. acquietare; L. ad + quies rest.
   See {Quiet} and cf. {Acquit}.]
   To quiet. [Obs.]

         Acquiet his mind from stirring you against your own
         peace.                                   --Sir A.
                                                  Sherley.