Source : Webster's Revised Unabridged Dictionary (1913)

Prepose \Pre*pose"\, v. t. [F. pr['e]poser; pref. pr['e]- (L.
   prae before) + poser. See {Pose}.]
   To place or set before; to prefix. [Obs.] --Fuller.

Source : WordNet®

prepose
     v : place before another constituent in the sentence; "English
         proposes the adpositions; Japanese postposes them"