Etymology: (1375–1425; late ME (< MF concerner) < ML concernere to relate to, distinguish (LL: to mix for sifting))
Definition of 'CONCERN'
Princeton's WordNet
1. (noun)concern something that interests you because it is important or affects you "the safety of the ship is the captain's concern"
2. (noun)concern, care, fear an anxious feeling "care had aged him"; "they hushed it up out of fear of public reaction"
3. (noun)concern a feeling of sympathy for someone or something "She felt strong concern for those less fortunate"
4. (noun)concern, worry, headache, vexation something or someone that causes anxiety; a source of unhappiness "New York traffic is a constant concern"; "it's a major worry"
5. (verb)business, concern, business concern, business organization, business organisation a commercial or industrial enterprise and the people who constitute it "he bought his brother's business"; "a small mom-and-pop business"; "a racially integrated business concern"
6. (verb)refer, pertain, relate, concern, come to, bear on, touch, touch on, have-to doe with be relevant to "There were lots of questions referring to her talk"; "My remark pertained to your earlier comments"
7. (verb)concern, interest, occupy, worry be on the mind of "I worry about the second Germanic consonant shift"
1. (noun)concern worries or fears concern for the children's happiness; concerns about/over the failing housing market; concern that the school may close
2. concern cause for concern reason to worry There is no cause for concern.
3. concern express/voice concern to say what worries you
4. concern sb's concern sb's responsibility or problem If he's broke, that's not my concern.
5. (verb)concern to worry sb Climate change concerns me.; It concerns us that you're doing this alone.; It concerns us to see so much poverty.
6. concern concern sb to hear/see/learn etc. to be about an essay concerning human intelligence
7. concern relate to or involve sb This matter doesn't concern you.
8. concern concern yourself to think or worry about She doesn't concern herself with unimportant things.
Definition of 'CONCERN'
Webster Dictionary
1. (noun)CONCERN that which relates or belongs to one; business; affair
2. (noun)CONCERN that which affects the welfare or happiness; interest; moment
Definitions of CONCERN 
Afrikaans: betref, raak
Arabic: يَخَص، يَهُم
Bulgarian: отнасям се до
Brazilian: dizer respeito
Czech: týkat se
German: betreffen
Danish: angå; vedrøre; berøre
Greek: αφορώ
Spanish: concernir
Estonian: (kellessegi) puutuma
Farsi: مربوط بودن به
Finnish: koskettaa
French: concerner
Hebrew: לִדאוֹג
Hindi: सरोकार
Croatian: ticati se, biti važan za,
Hungarian: (vkit)érint, illet
Indonesian: pentingan bagi
Icelandic: varða, snerta
Italian: riguardare
Japanese: ～にかかわる
Korean: 관계하다
Lithuanian: turėti ryšį su kuo, sieti
Latvian: attiekties uz; skart
Malay: kena-mengena
Dutch: betreffen
Norwegian: angå, vedrøre, berøre
Polish: dotyczyć
Persian: مربوط بودن به
Pashto: رابطه يا علاقه درلودل
Portuguese: dizer respeito
Romanian: a privi
Russian: касаться
Slovak: týkať sa
Slovenian: zadevati
Serbian: ticati se
Swedish: angå
Thai: เกี่ยวข้องกับ
Turkish: ilgilendirmek, ilgili olm
Taiwanese: 對...有關
Ukrainian: стосуватися, відноситися
Urdu: تعلق ہونا
Vietnamese: liên quan
Chinese: 对...有关
