/əˈpɔːl/ (v) to make someone have strong feelings of shock or of disapproval:
I was appalled at/by the lack of staff in the hospital.
The state of the kitchen appalled her.
Synonyms: horrify, scandalize
appalling
adjective
UK /əˈpɔː.lɪŋ/ US /əˈpɑː.lɪŋ/
C1
very bad:
appalling weather
The drive home was appalling.
C2
shocking and very bad:
appalling injuries
Prisoners were kept in the most appalling conditions.
More examples
He witnessed some appalling acts of barbarism during the war.
Conditions in the prison are said to be appalling.
Your table manners are appalling - don't you know how to use a knife and fork?
After her appalling behaviour, we had no option but to dismiss her.
The standard of cleanliness in some of these restaurants is frankly appalling.
appallingly (adv)