無効 (mukō) means “invalid” | MotiTan Japanese Dictionary

More examples

審査に通らなかった申請は無効です。shin sa ni tō ra na ka tta shin sei wa mu kō de su

Applications that did not pass the review are invalid.

Describes something that cannot produce its intended effect or be accepted as valid.

効力がなく、通用しないさま。kō ryoku ga na ku tsū yō shi na i sa ma

無効 (mukō, "invalid") is a Sino-Japanese compound of 無 (mu, "none") and 効 (kō, "effect"), expressing a lack of force or effect.

In Japanese customer service, 無効 (mukō, "invalid") often describes cards, tickets, coupons, or codes that no longer count, not only things that fail to work.