concernconcernconcernsconcernedconcerning1verb (concerns, concerning, concerned)1to be important or interesting to somebodysame meaningaffect: Please pay attention because this information concerns all of you.2to be about something: The story concerns a young boy and his parents.3to worry somebody: It concerns me that she is always late.concernconcernconcerns2noun1(no plural) worry: There is a lot of concern about this problem.2(pluralconcerns) something that is important or interesting to somebody: Her problems are not my concern.