A friend told me about this word, Father Steve, and I am wondering whether you have ever used it. (I shall copy what my friend looked up about it.) The word is affeer.
the two quick definitions given on onelook.com were:

(v. t.) To assess or reduce, as an arbitrary penalty or amercement, to a certain and reasonable sum.
(v. t.) To confirm; to assure.


Here's a quote from dictionary.com:
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.


Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.