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| Date: | 1300-1400 |
| Language: | French |
| Origin: | concerner, from Late Latin concernere 'to mix together', from Latin com- ( COM-) + cernere 'to sift' |
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concern2 W3 [transitive]
1 [not in passive] if a story, book, report etc concerns someone or something, it is about them : 
This study concerns couples' expectations of marriage.The report concerns the drug traffic on the Mexican-US border.
This study concerns couples' expectations of marriage.The report concerns the drug traffic on the Mexican-US border.2 to make someone feel worried or upset : Issues like food additives do concern me.
Issues like food additives do concern me.3 [not in passive] if an activity, situation, rule etc concerns you, it affects you or involves you : The tax changes will concern large corporations rather than small businesses.
The tax changes will concern large corporations rather than small businesses.4 to become involved in something because you are interested in it or because it worries you : He told them not to concern themselves about him. He loved his wife, and concerned himself with her needs and desires.
concern yourself with/about something
formalHe told them not to concern themselves about him.He loved his wife, and concerned himself with her needs and desires.5 an expression written at the beginning of a formal letter when you do not know the name of the person you want to communicate with
