concern

1 a commercial or industrial activity or organization several banking concerns in the area Synonyms business, company, enterprise, establishment, firm, house, interest, outfitRelated Words conglomerate, corporation, multinational; association, cartel, chain, combine, syndicate, trust; agency, dealer, outlet; microenterprise

2 an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble the recent crime wave has caused a great deal of concern in the neighborhood Synonyms agita, agitation, anxiousness, apprehension, apprehensiveness, care, anxiety, concernment, disquiet, disquietude, fear, nervosity, nervousness, perturbation, solicitude, sweat, unease, uneasiness, worryRelated Words strain, stress, tension; alarm (also alarum), anguish, consternation, desperateness, desperation, discomfort, discomposure, dismay, distraction, distress, disturbance, edginess, franticness, hand-wringing, jitters, jumpiness, panic, tremor; angst, fearfulness, torment, upset, vexation; cold feet, doubt, dread, foreboding, incertitude, misgiving, presentiment, suspense, uncertainty; compunction, qualm, scrupleNear Antonyms calm, calmness, content, contentment, ease, easiness, peace, peacefulness, placidity, placidness, quiet, quietude, sereneness, serenity, tranquillity (or tranquility), tranquilness; comfort, consolation, relief, solaceAntonyms unconcern

1 to have (something) as a subject matter the book concerns the challenges faced by children growing up in single-parent households Synonyms cover, deal (with), pertain (to), treat (of) Related Words appertain (to), bear (on or upon), refer (to), relate (to); advert (to), allude (to), cite, glance (upon), instance, mention, name, note, notice, quote, specify, touch (upon); offer, present; contain, embrace, encompass, entail, include, incorporate Phrases have to do with Near Antonyms exclude, omit; disregard, forget, ignore, neglect, overlook, overpass, pass over, slight, slur (over); brush (aside or off), reject, shrug off

2 to be the business or affair of the problems of air and water pollution that concern all of us Synonyms affect, involve, touch Related Words appertain (to), apply (to), bear (on), pertain (to), refer (to), relate (to); embroil, ensnare, entangle, implicate

3 to trouble the mind of; to make uneasy we were greatly concerned by reports that yet another previously unknown virus is now posing a threat Synonyms agitate, ail, alarm (also alarum), bother, disturb, derail, discomfort, discompose, dismay, disquiet, distemper, distract, distress, exercise, flurry, frazzle, freak (out), fuss, hagride, perturb, undo, unhinge, unsettle, upset, weird out, worryRelated Words aggravate, anger, annoy, bug, chafe, chivy (or chivvy), exasperate, fret, gall, get, grate, harass, harry, irk, irritate, nettle, peeve, pester, pique, put off, put out, rile, vex; bedevil, haunt, plague; abash, confound, confuse, discomfit, disconcert, discountenance, embarrass, faze, fluster, jar, mortify, nonplus, rattle, shake up; daunt, demoralize, discourage, dishearten, dispirit, unnerveNear Antonyms allay, alleviate, assuage; appease, conciliate, mollify, pacify, placate, propitiateAntonyms calm, compose, quiet, settle, soothe, tranquilize (also tranquillize)