The Collaborative International Dictionary of English v.0.48:

Forego \Fore*go"\, v. t. [imp. Forewent 2; p. p. Foregone
   (?; 115); p. pr. & vb. n. Foregoing.] [See Forgo.]
   1. To quit; to relinquish; to leave.
      [1913 Webster]

            Stay at the third cup, or forego the place.
                                                  --Herbert.
      [1913 Webster]

   2. To relinquish the enjoyment or advantage of; to give up;
      to resign; to renounce; -- said of a thing already
      enjoyed, or of one within reach, or anticipated.
      [1913 Webster]

            All my patrimony,,
            If need be, I am ready to forego.     --Milton.
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            Thy lovers must their promised heaven forego.
                                                  --Keble.
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            [He] never forewent an opportunity of honest profit.
                                                  --R. L.
                                                  Stevenson.
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   Note: Forgo is the better spelling etymologically, but the
         word has been confused with Forego, to go before.
         [1913 Webster]

WordNet (r) 3.0 (2006):

foregoing
    adj 1: especially of writing or speech; going before

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "foregoing":
   above, aforegoing, aforementioned, aforenamed, aforesaid,
   antecedent, anterior, anticipatory, beforementioned, chief,
   ci-devant, earlier, early, elder, first, fore, forementioned,
   foremost, forenamed, former, heading, headmost, last, latter,
   leading, named, older, past, precedent, preceding, precessional,
   precurrent, precursory, preexistent, preliminary, previous, prime,
   prior, said, same, senior