forfeiture UK /ˈfɔːfɪtʃə/US /ˈfɔɹfɪt͡ʃɚ/ noun4 •A legal action whereby a person loses all interest in the forfeit property. •The loss of forfeit property. •Any loss occasioned by one's own actions.We conclude that the government has forfeited any claim of forfeiture, so we proceed to consider the merits. — 2020 •The property lost as a forfeit. formsforfeitures