Translation guide
How to express that something is valid, legitimate, or in effect in Japanese, depending on context.
Describing that a document, contract, ticket, or official status is valid or in effect.
The most common word for 'valid' in official contexts, such as documents, tickets, or contracts.
This passport is still valid.
The coupon is valid until next month.
More formal or written form of 'be valid', often used in legal or official documents.
This contract is still valid.
To become valid, to take effect.
The new law will be valid from next month.
Describing that an argument, reason, or point is valid or sound.
Means 'valid' in the sense of being reasonable, appropriate, or well-founded. Often used for arguments or decisions.
I think his opinion is valid.
That judgment is not valid.
Literally 'the logic goes through', meaning an argument is coherent and valid.
His explanation is valid (makes sense).
Means 'just' or 'legitimate', often used for rights, claims, or reasons. More formal.
Describing that something is acceptable or applicable under certain conditions.
Specifically referring to something not being expired, like food or a deadline.
Means 'within the deadline/expiration date', often used for food, offers, or applications.
This food is still valid (not expired).
Literally 'the expiration date has not run out', a more explicit way to say something is valid.
有効 (ゆうこう) is for official validity (documents, tickets). 妥当 (だとう) is for logical validity (arguments, decisions).
Is the passport valid?
Is that proposal valid?
The English loanword バリッド is rarely used and sounds unnatural. Use 有効 or 妥当 instead.
彼には正当な理由がある。
He has a valid reason.
このパスワードは有効ではありません。
This password is not valid.
Please check if your credit card is still valid.