foredate

from WordNet (r) 3.0 (2006)

foredate
    v 1: establish something as being earlier relative to something
         else [syn: {predate}, {antedate}, {foredate}] [ant:
         {postdate}]

from The Collaborative International Dictionary of English v.0.48

Foredate \Fore*date"\, v. t.
   To date before the true time; to antedate.
   [1913 Webster]

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