Pre·pose' transitive verb [ French préposer ; prefix pré- (L. prae before) + poser . See Pose .] To place or set before; to prefix. [ Obsolete] Fuller. Found on http://www.encyclo.co.uk/webster/P/153
to place (a grammatical form) before a related grammatical form: The adverb “out” of “put the light out” is preposed in “put out the light.” Found on https://www.infoplease.com/dictionary/prepose