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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(211) The calcium channel blocker had similar effect and was concerned by doctors.
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.