Webster's Revised Unabridged Dictionary · 1913

Forfeit

Forfeit , noun

[Old English forfet crime, penalty, French forfait crime (Late Latin forefactum, forifactum), prop. past participle of forfaire to forfeit, transgress, from Late Latin forifacere, prop., to act beyond; Latin foris out of doors, abroad, beyond + facere to do. See Foreign, and Fact.]

1.
Injury; wrong; mischief. [Obsolete & Rare]
To seek arms upon people and country that never did us any forfeit. — Ld. Berners
2.
A thing forfeit or forfeited; what is or may be taken from one in requital of a misdeed committed; that which is lost, or the right to which is alienated, by a crime, offense, neglect of duty, or breach of contract; hence, a fine; a mulct; a penalty; as, he who murders pays the forfeit of his life.
Thy slanders I forgive; and therewithal Remit thy other forfeits. — Shakespeare
3.
Something deposited and redeemable by a sportive fine; -- whence the game of forfeits.
Country dances and forfeits shortened the rest of the day. — Goldsmith

Forfeit , adjective

[French forfait, past participle of forfaire. See Forfeit, n.]

Lost or alienated for an offense or crime; liable to penal seizure.
Thy wealth being forfeit to the state. — Shakespeare
To tread the forfeit paradise. — Emerson

Forfeit , transitive verb

[Old English forfeten. See Forfeit, n.]

To lose, or lose the right to, by some error, fault, offense, or crime; to render one's self by misdeed liable to be deprived of; to alienate the right to possess, by some neglect or crime; as, to forfeit an estate by treason; to forfeit reputation by a breach of promise; -- with to before the one acquiring what is forfeited.
[They] had forfeited their property by their crimes. — Burke
Undone and forfeited to cares forever! — Shakespeare

Forfeit , intransitive verb

1.
To be guilty of a misdeed; to be criminal; to transgress. [Obsolete]
2.
To fail to keep an obligation. [Obsolete]
I will have the heart of him if he forfeit. — Shakespeare

Forfeit , past participle and adjective

In the condition of being forfeited; subject to alienation. — Shakespeare
Once more I will renew His lapsèd powers, though forfeite. — Milton