concerning
US /kənˈsɝː.nɪŋ/
UK /kənˈsɝː.nɪŋ/

1.
concerniente a, respecto a, sobre
about; regarding
:
•
He received a letter concerning his application.
Recibió una carta concerniente a su solicitud.
•
There were many questions concerning the new policy.
Hubo muchas preguntas concernientes a la nueva política.
1.
preocupante, inquietante
causing worry, anxiety, or fear; worrying
:
•
The news of the rising crime rate is very concerning.
La noticia del aumento de la tasa de criminalidad es muy preocupante.
•
His sudden change in behavior was quite concerning.
Su cambio repentino de comportamiento fue bastante preocupante.