| \ kən-ˈsərn
concerned; concerning; concerns
: to relate to : be about
The novel concerns three soldiers. The report concerns global warming.
: to bear on
: to have an influence on : involve
: to be the business or affair of
The problem concerns us all. This conversation does not concern you.
: to be a care, trouble, or distress to
Her ill health concerns me. Her son's frequent tantrums concerned her.
: engage entry 1, occupy
He concerns himself with trivia. She refused to concern herself with such gossip.
: marked interest or regard usually arising through a personal tie or relationship
Their friend's health is a constant cause of concern.
: an uneasy state of blended interest, uncertainty, and apprehension
The actor's sudden collapse on stage caused concern.
: something that relates or belongs to one : affair
It's no concern of yours.
: matter for consideration
Immigration had become a concern to Congress.
: a matter that causes feelings of unease, uncertainty, or apprehension
health/safety concerns "Just throw it into the sun!" That phrase has long been the seemingly easy answer to … very serious concerns about what to do with nuclear waste.— Dave Trumbore
: an organization or establishment for business or manufacture
a banking concern a commercial concern