無効 (むこう, mukou) Japanese meaning: invalid | Kotomoraこのパスポートは期限が切れているので無効です。
This passport is invalid because it has expired.
The contract became void.
That measure was ineffective after all.
Usage patterns
〈事〉が無効になるfor something (a contract, ticket, vote, etc.) to become invalid
Because there was no signature, the contract became invalid.
〈事〉を無効と判断するto judge/rule that something is invalid
The court ruled that the election was invalid.
票
invalid vote; spoiled ballot
