Source : Webster's Revised Unabridged Dictionary (1913)

Affeer \Af*feer"\, v. t. [OF. aforer, afeurer, to tax, appraise,
   assess, fr. L. ad + forum market, court of justice, in LL.
   also meaning price.]
   1. To confirm; to assure. [Obs.] ``The title is affeered.''
      --Shak.

   2. (Old Law) To assess or reduce, as an arbitrary penalty or
      amercement, to a certain and reasonable sum.

            Amercements . . . were affeered by the judges.
                                                  --Blackstone.