Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993.
concern (n.)
is used in combinations with about, for, over, and with, to mean “worry, uncertainty, interest, or fear”: My concern is about meeting my deadline. His concern was for [over] his mother’s safety. Our study’s concerns were with injuries resulting from industrial accidents. It combines with in to mean “interest or involvement”: Our concern is in budgetary matters. See PROPOSAL.
