appalling
Concise Oxford English Dictionary © 2008 Oxford University Press:
appal /əˈpɔːl/ (US appall)
▶verb (appals, appalling, appalled)
- 1 greatly dismay or horrify.
- 2 (as adj. appalling) very bad or displeasing.
– derivatives
appallingly adverb.
appallingly adverb.
– origin ME: from OFr. apalir ‘grow pale’.
'appalling' also found in these Oxford entries:

