przerażony zbulwersowany in English:

I'm appalled at how badly those children behave.

I was appalled at the sight.

The senselessness of the act appalled him.

I was appalled by what I saw. When I heard what had happened I was absolutely appalled.

The idea appalled me.

We were appalled by the starvation we saw everywhere.

they were appalled

I expected readers of the future would be appalled that

I'm appalled. You leave me speechless.