Translation guide
The adverb 'unwisely' describes doing something in a way that shows poor judgment or lack of wisdom. In Japanese, this is most naturally expressed through adverbs meaning 'foolishly' or 'thoughtlessly', or by using negative evaluations of the action.
Describing an action done without good judgment, often with a nuance of regret or criticism.
A common adverb meaning 'foolishly' or 'stupidly'. It directly conveys that the action was unwise. Often used in reflective or critical statements.
愚かにも、彼はその申し出を受け入れた。
Unwisely, he accepted the offer.
愚かにも、私は彼を信じてしまった。
Foolishly, I ended up trusting him.
Expressing that an action is not recommended or is against better judgment, often using conditional or negative advice patterns.
Pattern meaning 'it's better not to do ~'. This is the most natural way to advise against an unwise action.
そんなことを言わないほうがいい。
It would be unwise to say such a thing.
愚かにも implies a stronger sense of foolishness or stupidity, often with emotional weight. 軽率にも focuses on the lack of careful thought or rashness, and is slightly more formal. In many cases they are interchangeable, but 愚かにも can sound more self-critical.
愚かにも、私は彼の嘘を見抜けなかった。
Foolishly, I couldn't see through his lies.
軽率にも、十分な確認をせずに契約した。
Rashly, I signed the contract without sufficient confirmation.
When you want to tell someone that an action is unwise, the pattern ～ないほうがいい is the most natural and common way. It is softer than ～べきではない and suitable for everyday conversation.
Means 'rashly' or 'thoughtlessly'. Emphasizes lack of careful consideration. Suitable for both spoken and written contexts.
軽率にも、彼女は秘密を漏らしてしまった。
Unwisely, she let the secret slip.
Literally 'without thinking'. A more casual, spoken way to say 'thoughtlessly' or 'unwisely'.
考えなしに行動すると、後悔するよ。
If you act unwisely, you'll regret it.
Means 'indiscreetly' or 'imprudently'. A more formal and literary term, often used in writing.
無分別にも、彼は全財産を投機に使った。
Unwisely, he used all his fortune for speculation.
It would be unwise to go out now.
Pattern meaning 'should not do ~'. Stronger and more direct than ～ないほうがいい. Used for moral or logical judgments.
彼を信用するべきではない。
You should not trust him; it would be unwise.
Literally 'is not wise'. A direct but somewhat stiff way to say something is unwise. More common in formal or written contexts.
その決定は賢明ではない。
That decision is unwise.
When you want to tell someone that an action is unwise, the pattern ～ないほうがいい is the most natural and common way. It is softer than ～べきではない and suitable for everyday conversation.