Translation guide
The English word "valid" can express several related ideas: something that is legally or officially acceptable, a logical argument that is sound, or a ticket/pass that is still usable. This guide covers natural Japanese ways to express these meanings.
Describing a document, contract, license, or claim that is recognized by law or authority.
The most common and direct translation for 'valid' in legal, official, or technical contexts. Used for documents, contracts, tickets, etc.
このパスポートはまだ有効です。
This passport is still valid.
契約は来月まで有効です。
The contract is valid until next month.
Emphasizes that something is justifiable or legitimate, often used for reasons, claims, or rights.
彼の主張は正当だ。
His claim is valid.
Specifically means 'legal' or 'lawful'. Use when emphasizing compliance with the law.
この契約は合法ですか？
Is this contract valid?
Describing an argument, point, or reasoning that is well-founded and makes sense.
Means 'valid', 'appropriate', or 'reasonable'. Commonly used for arguments, conclusions, or decisions.
彼の意見は妥当だと思う。
I think his opinion is valid.
その結論は妥当ではない。
That conclusion is not valid.
An idiomatic phrase meaning 'to be logical' or 'to make sense'. Used for reasoning or arguments.
彼の説明は筋が通っている。
His explanation is valid.
Means 'to be reasonable' or 'to stand to reason'. Slightly more formal.
その提案は理にかなっている。
The proposal is valid.
Describing a ticket, pass, or coupon that has not expired and can still be used.
Same as the legal sense, but specifically for items with an expiration date.
このチケットは明日まで有効です。
This ticket is valid until tomorrow.
Casual way to say 'can be used'. Common in everyday speech.
有効 (ゆうこう) is used for documents, tickets, and official validity. 妥当 (だとう) is used for arguments, decisions, and logical validity. Do not use 有効 for an opinion.
パスポートは有効です。
The passport is valid.
その意見は妥当です。
That opinion is valid.
The English word 'valid' is sometimes translated as バリッド (borrowed word), but this is rarely used and sounds unnatural. Stick to the Japanese words above.
このクーポン、まだ使える？
Is this coupon still valid?