ap‧palled /əˈpɔːld $ əˈpɒːld/ adjective
very shocked and upset by something very bad or unpleasant
appalled by
I was appalled by what I saw.
appalled at
He was appalled at how dirty the place was.
When I heard what had happened I was absolutely appalled.

[TahlilGaran] Dictionary of Contemporary English ▲

shocked feeling surprised and upset by something very unexpected and unpleasant:
I was shocked when I heard what had happened.
We are all deeply shocked by his death.
They seemed shocked at the suggestion.
shaken shocked because something very unpleasant or frightening has happened – used when the experience has made you feel weak or nervous:
He was badly shaken by the incident.
She looked shaken by the news.
be in a state of shock to feel shocked and unable to do normal things:
He was uninjured but in a state of shock after the attack.
horrified very shocked because something unpleasant or frightening has happened:
She was horrified to discover that her son had been taking drugs.
There was a horrified look on his face.
appalled very shocked because you think something is very bad:
I was appalled by his behaviour.
Emma was appalled at how he’d treated his mother.
traumatized so badly shocked that you are affected for a very long time:
The children were severely traumatized by years of civil war.
outraged extremely shocked and angry:
The victim’s family were outraged at the short jail sentence.
devastated extremely shocked and sad – used when someone is extremely badly affected by something:
Petra was absolutely devastated by the death of her daughter.
stunned so shocked that you are unable to do or say anything immediately:
He had been stunned by the news of his friend’s sudden death.
dazed very shocked and unable to think clearly:
He emerged from the wreck of the car, dazed but unhurt.
aghast /əˈɡɑːst $ əˈɡæst/ [not before noun] written shocked:
She looked aghast at the suggestion.

[TahlilGaran] English Thesaurus ▲