Definition from macmillandictionary.com
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Concerned parents held a meeting to discuss the issue.
Police said they were very concerned about the boy’s safety.
She was concerned that her name might be given out over the radio.
I suggest you have a quick word with the person concerned.
It was a difficult time for all concerned (=for everyone who was involved).
This is a company that is directly concerned with the defence industry.
I think she’s genuinely concerned about you.
He was truly concerned for her happiness.
He’s more concerned with what people think of him than anything else.
The government is chiefly concerned to ensure control of the economy.
The report is concerned with the relationship between politics and the law.