Concern is both a noun and a verb. As a noun it's something that you find particularly important. If you love pizza, getting the crust just so is a major concern during your pizza party.

Concern can also be something or someone that makes you upset or anxious, like your concern over the quality of the pizza crust. It can be a feeling of sympathy, like when your mom expresses concern over your obsession with pizza crust. As a verb, concern means to be relevant to something. Your main goal today may concern studying for your math test. Concern can also describe worry. When you stay out past curfew, your mom will be concerned.

Definitions of concern

n something that interests you because it is important or affects you

“the safety of the ship is the captain's concern
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earth, earthly concern, world, worldly concern
the concerns of this life as distinguished from heaven and the afterlife
affair, matter, thing
a vaguely specified concern
affairs, personal business, personal matters
matters of personal concern
that which concerns a person with regard to a particular role or situation
point of honor
a concern that seriously reflects on your honor
something that is of no importance
dirty laundry, dirty linen
personal matters that could be embarrassing if made public
Type of:
interest, involvement
a sense of concern with and curiosity about someone or something

n an anxious feeling

care, fear
Type of:
a vague unpleasant emotion that is experienced in anticipation of some (usually ill-defined) misfortune

n a feeling of sympathy for someone or something

“She felt strong concern for those less fortunate”
a feeling of lack of concern
solicitousness, solicitude
a feeling of excessive concern
softheartedness, tenderness
a feeling of concern for the welfare of someone (especially someone defenseless)
Type of:
fellow feeling, sympathy
sharing the feelings of others (especially feelings of sorrow or anguish)

n something or someone that causes anxiety; a source of unhappiness

“New York traffic is a constant concern
headache, vexation, worry
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a source of concern
burden, encumbrance, incumbrance, load, onus
an onerous or difficult concern
a rightful concern or responsibility
dead weight
an oppressive encumbrance
a burden (figuratively in the form of a bundle)
an uncalled-for burden
something unpleasant or offensive that must be tolerated or endured
Type of:
negative stimulus
a stimulus with undesirable consequences

n a commercial or industrial enterprise and the people who constitute it

business, business concern, business organisation, business organization
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a business that serves other businesses
the business of a broker; charges a fee to arrange a contract between two parties
carrier, common carrier
a person or firm in the business of transporting people or goods or messages
(business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
business firm, firm, house
the members of a business organization that owns or operates one or more establishments
dealership, franchise
a business established or operated under an authorization to sell or distribute a company's goods or services in a particular area
maker, manufacturer, manufacturing business
a business engaged in manufacturing some product
the members of a business venture created by contract
a business engaged in processing agricultural products and preparing them for market
a business that builds and repairs ships
a business that is less successful than expected
a commercial organization serving as a common carrier
corp, corporation
a business firm whose articles of incorporation have been approved in some state
a partnership in which employees get a share of the profits in addition to their wages
apparel chain
a chain of clothing stores
discount chain
a chain of discount stores
restaurant chain
a chain of restaurants
retail chain
a chain of retail stores
accounting firm
a firm of accountants who provide accounting and auditing services for a fee
consulting company, consulting firm
a firm of experts providing professional advice to an organization for a fee
publisher, publishing company, publishing firm, publishing house
a firm in the publishing business
a firm engaged in trading
law firm
a firm of lawyers
armorer, armourer
a manufacturer of firearms
a manufacturer that makes and bottles beverages
auto maker, auto manufacturer, automaker, car maker, car manufacturer, carmaker
a business engaged in the manufacture of automobiles
computer business
a business that manufactures and sells computers
commodity brokerage
a brokerage firm dealing in commodities
auction house
a firm that conducts auctions
ad agency, advertising agency
an agency that designs advertisement to call public attention to its clients
credit bureau
a private firm that maintains consumer credit data files and provides credit information to authorized users for a fee
detective agency
an agency that makes inquiries for its clients
employment agency, employment office
an agency that finds people to fill particular jobs or finds jobs for unemployed people
commercial agency, mercantile agency
an organization that provides businesses with credit ratings of other firms
news agency, news organisation, news organization, press agency, press association, wire service
an agency to collects news reports for newspapers and distributes it electronically
service agency, service bureau, service firm
a business that makes its facilities available to others for a fee; achieves economy of scale
travel agency
an agency that arranges personal travel
transfer agent
an agency (usually a bank) that is appointed by a corporation to keep records of its stock and bond owners and to resolve problems about certificates
Type of:
an organization created for business ventures

v be relevant to

bear on, come to, have-to doe with, pertain, refer, relate, touch, touch on
advert, allude, touch
make a more or less disguised reference to
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center, center on, concentrate on, focus on, revolve about, revolve around
center upon
apply, go for, hold
be pertinent or relevant or applicable
affect, involve, regard
connect closely and often incriminatingly
interest, matter to
be of importance or consequence
bring into intimate and incriminating connection
fascinate, intrigue
cause to be interested or curious

v be on the mind of

interest, occupy, worry