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Verb: appal (appalled,appalling)  u'pol
Usage: Brit, Cdn (US: appall)
  1. Strike with disgust or revulsion
    "The scandalous behaviour of this married woman appalled her friends";
    - shock, offend, scandalize, scandalise [Brit], appall [US], outrage
  2. 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

Derived forms: appalling, appals

Type of: affright, disgust, fright [archaic], frighten, nauseate, revolt, scare, sicken