preposition
- about; relating to; with regard to
adjective
- causing worry or anxiety; troubling
Examples
- The teacher spoke to parents concerning their children’s progress.
- I have some questions concerning the new policy.
- The doctor received concerning test results from the lab.
- Her recent behavior has been quite concerning to her family.
- The company issued a statement concerning the data breach.
- The concerning rise in crime rates prompted new safety measures.