small-minded
US /ˌsmɔːlˈmaɪn.dɪd/
UK /ˌsmɔːlˈmaɪn.dɪd/

1.
engstirnig, kleinlich
having a narrow outlook or scope; petty or provincial
:
•
His small-minded comments revealed his lack of understanding.
Seine engstirnigen Kommentare offenbarten sein mangelndes Verständnis.
•
Don't let small-minded people discourage your dreams.
Lass dich nicht von engstirnigen Leuten von deinen Träumen abhalten.