| concern | (noun) something that interests you because it is important or affects you | - |
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| (noun) something or someone that causes anxiety; a source of unhappiness | Synonyms: headache, vexation, worry |
| (noun) a feeling of sympathy for someone or something | - |
| (noun) an anxious feeling | Synonyms: care, fear |
| (noun) a commercial or industrial enterprise and the people who constitute it | Synonyms: business, business concern, business organisation, business organization |
| (verb) be relevant to | Synonyms: bear on, come to, have to do with, pertain, refer, relate, touch, touch on |
| (verb) be on the mind of | Synonyms: interest, occupy, worry |
| discern | (verb) detect with the senses | Synonyms: distinguish, make out, pick out, recognise, recognize, spot, tell apart |
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| secern | (verb) mark as different | Synonyms: differentiate, distinguish, secernate, separate, severalise, severalize, tell, tell apart |
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| unconcern | (noun) the trait of remaining calm and seeming not to care; a casual lack of concern | Synonyms: indifference, nonchalance |
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| (noun) a feeling of lack of concern | - |