"失効する" means "lapse", "expire"

Kanji in this word

Related words "失"

• 亡失 (boshitsu)loss
• 喪失 (soshitsu)loss
• 失う (ushinau)lose, miss
• 失する (shissuru)forget, miss
• 失墜 (shittsui)fall, loss
• 失恋 (shitsuren)unrequited love

Related words "効"

• 効き目 (kikime)effect, efficacy
• 効く (kiku)be effective
• 効力 (koryoku)effect, efficacy, validity
• 効果 (koka)effect
• 効率 (koritsu)efficiency
• 効用 (koyo)effect, use, usefulness