con ‧ cern ‧ ing W3 /kənˈsɜːnɪŋ $ -ɜːr-/ BrE AmE preposition
about or relating to:
calls from young children concerning lost pets
the facts concerning Marr’s car crash
REGISTER
In everyday English, people usually say about rather than concerning :
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I’ve already written to him about the problem.
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THESAURUS
▪ about used when saying what the subject of something is:
She’s always talking about you.
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In her novels she writes about life in South Africa.
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There’s something I wanted to ask you about.
▪ on about a particular subject:
a book on English grammar
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a report on poverty in rural areas
▪ concerning/regarding formal about:
Prince Saiid answered questions concerning Kuwait’s future.
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The report raises a number of questions regarding food safety.
▪ with regard to formal about – used especially when you want to start talking or writing about something:
Dear Sir, I’m writing with regard to your advertisement in The Times.
▪ re used in business letters and in emails to introduce the subject that you are going to write about:
Re: Friday’s meeting