ADJ
- considerable, deep, grave, great, major, serious
- growing, mounting
- common, widespread
- national, public
- public concern about increased taxes
VERB + CONCERN
- feel
- He felt some concern for her safety
- express, show, voice
- cause
- The lack of firefighting equipment has caused concern
PREP
- in sb's ~
- She forgot her own worries in her concern for him
- out of ~
- ~ about/over
- She expressed her deep concern about conditions at the factory
- ~ for
- Out of concern for her health, we suggested she take a week off work
PHRASES
- be of (no) concern to sb
- Increased use of drugs is of great concern to parents
- (a) cause for concern
- The president's health is giving serious cause for concern
- a lack of concern
- I was surprised by her lack of concern
- a matter of concern
- Stress at work is a matter of concern to staff and management
ADJ
- chief, main, major, overriding, paramount, primary
- What are your main concerns as a writer?
- common
- a common concern for new parents
PHRASES
- be none of sb's concern
- How much we paid is none of your concern
PREP
- in
- Everyone who was directly concerned in (= had some responsibility for) the incident has now resigned
ADV
- a lot, really
- It really concerns me that he doesn't eat properly
- slightly