take someone/something seriously
US /teɪk ˈsʌmwʌn/ˈsʌmθɪŋ ˈsɪriəsli/
UK /teɪk ˈsʌmwʌn/ˈsʌmθɪŋ ˈsɪriəsli/

1.
ernst nehmen, ernsthaft betrachten
to believe that someone or something is important and deserves attention
:
•
You need to take your studies seriously if you want to succeed.
Du musst dein Studium ernst nehmen, wenn du erfolgreich sein willst.
•
Don't take his threats seriously; he's just trying to scare you.
Nimm seine Drohungen nicht ernst; er versucht dich nur zu erschrecken.