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. “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.