Translation guide
Expresses worry, care, involvement, or relevance. Japanese uses different constructions depending on whether you are worried about something, care about a person or issue, or are involved in a matter.
I'm concerned about his health.
I'm concerned about the exam results.
Literally 'on one's mind', used for nagging worries or things that bother you. More casual than 心配.
I'm concerned about his attitude.
To be bothered or concerned about something, often implying you can't stop thinking about it.
He's concerned about his weight.
To care about a person, issue, or outcome; to be interested in someone's well-being.
To be involved in or related to a matter; to have a stake in something.
To be related to or involved in something. Neutral, factual.
Is anyone concerned with this issue?
To be involved in, often with a nuance of active participation or deep connection.
Literally 'there is a relation'. Used in negative or question forms to say something is not your concern.
That doesn't concern me.
Used in formal contexts like 'To whom it may concern' or 'the parties concerned'.
The English adjective 'concerned' does not have a single Japanese adjective equivalent. Use verb phrases like 心配している or 気にしている depending on the nuance.
He looked concerned.
He is concerned about his family (cares deeply for them).
He is deeply concerned with that project.
当事者の意見を聞く必要がある。
We need to hear the opinion of the person concerned.