Antonym: irrelevant, unconcerned. Similar words: be concerned about, concern, concerning, concert, disconcerting, concede, concept, conceal. Meaning: [-nd] 
adj. 1. feeling or showing worry or solicitude 2. involved in or affected by or having a claim to or share in 3. in relation (or in regard) to; especially as in the phrases 4. culpably involved.
adj. 1. feeling or showing worry or solicitude 2. involved in or affected by or having a claim to or share in 3. in relation (or in regard) to; especially as in the phrases 4. culpably involved. 
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(1) The loss was a tragedy for all concerned .
(2) We all concerned for her safety.
(3) We have become concerned with regards to .....
(4) Divorce is very painful, especially when children are concerned.
(5) We are concerned about the size of our debt.
(6) The one point that concerned us a little was...
(7) She doesn't seem unduly concerned about her exams.
(8) I'm not concerned about what they may say.
(9) He was never concerned about being born a bastard.
(10) They are seriously concerned about security.
(11) I was concerned about you.
(12) She had never been greatly concerned about her appearance.
(13) The soldiers concerned were unarmed at the time.
(14) Where the law is concerned, I'm only a layman.
(15) They are concerned about my welfare.
(16) The individuals concerned have some explaining to do.
(17) We could not prove he was concerned with the crime, so we had to release him.
(18) The committee is concerned about the large number of prisoners sharing cells.
(19) The police are very concerned for the welfare of the missing child.
(20) He said he had concerned for me very much last night.
(21) I am still concerned about the left(sentencedict.com/concerned.html), you do not see my time.
(22) They will be concerned to cut back expenditure on unnecessary items.
(23) Disgusted onlookers claimed the driver was more concerned about his car than about the victim.
(24) Although the relationship is no longer as concerned about it, but how can you say broken off.
(25) Where our children's education is concerned, no compromise is acceptable.
(26) The committee is concerned about players' behaviour, especially arguing with referees.
(27) I don'nt know who my grandfather was. I' m much more concerned to know what his grandson will be. 
(28) I have a blind spot where classic music is concerned.
(29) The new regulations will be of benefit to everyone concerned.
(30) No matter where are, I will always be the person who is the most concerned about you.
More similar words: be concerned about, concern, concerning, concert, disconcerting, concede, concept, conceal, conceit, conceive, concealed, conceited, conceptual, concession, conception, concealment, concentrate, inconceivable, concentration, concentrate on, concentrating, conceptualise, adorned, learned, Internet, wilderness, underneath, discern, eastern europe, discernible.