Other forms: concerns
A concern is a worry, or the matter that a person is responsible for. Raise a concern, a cause for concern, none of your concern.
In official language a concern is a complaint made politely, and raising concerns is the formal first step in most complaint procedures. A going concern is a business still trading, which is an accounting term. Note that the Latin means to sift together, from cernere, to separate.
1nounworryA worry.
“The doctor said there was no cause for concern, as the test results were normal.”
2nounconcernA matter somebody is responsible for.
“What I do in my free time is no concern of yours.”
Too few real examples of this word to estimate which sense is commonest.
concern is a worry or a responsibility.
Latin concernere means to sift or mingle together, from con plus cernere, to separate. Discern and certain come from the same sifting.
Proto-Indo-European
*krey-
Latin
concernō — to mix, sift, or mingle together, as in a sieve
Medieval Latin
concerno — I distinguish, have respect to
Middle French
concerner
English, today
concern
Built from
Middle French concerner, from Medieval Latin concerno (“I distinguish, have respect to”), from Latin concernō (“to mix, sift, or mingle together, as in a sieve”), combined form of con- + cernō (“distinguish”).
Etymology from Wiktionary, CC BY-SA