喪失する
失うこと
面目を失うこと
to lose the balance―lose the equilibrium
to lose its original form
(契約なら)to lose effect―become invalid―lose its validity―become null and void―(約束なら)―cease to be binding―(法律なら)―become ineffective―become void―go out of force―(切符なら)―become unavailable―cease to be available
to be disqualified for or from something―incapacitated for or from something
国籍を喪失する