nagging concern

noun phrase
UK /ˈnæɡ.ɪŋ kənˈsɜːn/
US /ˈnæɡ.ɪŋ kənˈsɝːn/

A little worry that keeps bothering you and won't go away.

She had a nagging concern that she had left the stove on.


OTHER MEANINGS

2. A small problem that keeps annoying you.

He had a nagging concern about the noise from the old fridge.

3. A feeling that something might be wrong even if you can't explain why.

There was a nagging concern in the back of his mind about the test results.

4. A repeated complaint or worry that someone keeps bringing up.

Her nagging concern about the budget came up at every meeting.