Definition of Appal

Verb: appal (appalled,appalling) u'pol
Usage: Brit, Cdn (US: appall)

Strike with disgust or revulsion
"The scandalous behaviour of this married woman appalled her friends";
- shock, offend, scandalize, scandalise [Brit], appall [US], outrage
Fill with apprehension or alarm; cause to be unpleasantly surprised
"I was appalled at the thought of being late for my interview";
- dismay, alarm, appall [US], horrify