concern

/kən-ˈsərn/

Middle English, from Middle French & Medieval Latin; Middle French concerner, from Medieval Latin concernere, from Late Latin, to sift together, mingle, from Latin com- + cernere to sift

verb

  1. to relate to : be, about

  2. to bear on

  3. to have an influence on : involve; also : to be the business or affair of

The novel concerns three soldiers.

noun

  1. marked interest or regard usually arising through a personal tie or relationship

  2. an uneasy state of blended interest, uncertainty, and apprehension

  3. something that relates or belongs to one : affair

Their friend's health is a constant cause of concern.

The actor's sudden collapse on stage caused concern.

care concern solicitude anxiety worry mean a troubled or engrossed state of mind or the thing that causes this. care implies oppression of the mind weighed down by responsibility or disquieted by apprehension. concern implies a troubled state of mind because of personal interest, relation, or affection.

idiom

  1. to become involved or interested in something : to give one's attention to something —often + with/in/about

She can handle the problem alone. There's no need for you to concern yourself.