Merriam-Webster Collegiate Dictionary - forfeit

 I. noun  Etymology: Middle English forfait, from Anglo-French, from past participle of forfaire, forsfaire to commit a crime, ~, from fors outside (from Latin foris) + faire to do, from Latin facere — more at forum, do  Date: 14th century  1. something ~ed or subject to being ~ed (as for a crime, offense, or neglect of duty) ; penalty  2. ~ure especially of civil rights  3.  a. something deposited (as for making a mistake in a game) and then redeemed on payment of a fine  b. plural a game in which ~s are exacted  II. transitive verb  Date: 14th century  1. to lose or lose the right to especially by some error, offense, or crime  2. to subject to confiscation as a ~; also abandon, give up  • ~able adjective  • ~er noun  III. adjective  Date: 14th century ~ed or subject to ~ure