/ ˈfɔːfɪt; NAmE ˈfɔːrfət/ verb , noun , adjective
■ verb
[ vn ] to lose sth or have sth taken away from you because you have done sth wrong :
If you cancel your flight, you will forfeit your deposit.
He has forfeited his right to be taken seriously.
■ noun
something that a person has to pay, or sth that is taken from them, because they have done sth wrong
■ adjective
[ not before noun ] ( formal ) taken away from sb as a punishment
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WORD ORIGIN
Middle English (originally denoting a crime or transgression, hence a fine): from Old French forfet , forfait , past participle of forfaire transgress, from for- out (from Latin foris outside) + faire do (from Latin facere ).