forfeit

Short definition from Wiktionary

Noun

1. 1
   A penalty for or consequence of a misdemeanor.
2. 2
   A thing forfeited; that which is taken from somebody in requital of a misdeed committed; that which is lost, or the right to which is alienated, by a crime, breach of contract, etc.
3. 3
   Something deposited and redeemable by a sportive fine as part of a game.
4. 4
   Injury; wrong; mischief.

Verb

1. 1
   To suffer the loss of something by wrongdoing or non-compliance
2. 2
   To lose a contest, game, match, or other form of competition by voluntary withdrawal, by failing to attend or participate, or by violation of the rules
3. 3
   To be guilty of a misdeed; to be criminal; to transgress.
4. 4
   To fail to keep an obligation.
5. 5
   Of government officials: to legally remove property from its previous owners.

Adjective

1. 1
   Lost or alienated for an offense or crime; liable to penal seizure.