1. worry or anxiety about something
2. something that causes worry or is important to someone
3. interest in or care about something

1. to worry someone or make them anxious
2. to be about or relate to something
3. to be interested in or care about something

Examples

• Her main concern was getting home safely.
• The teacher expressed concern about the student’s grades.
• Environmental issues are a growing concern worldwide.
• The family business is a profitable concern.
• Don’t let his criticism concern you too much.
• This matter concerns all of us.
• She doesn’t concern herself with gossip.
• The new policy concerns employee benefits.