- Fill (someone) with horror or disgust.
- To shock or dismay greatly.
Mid 17th century (in the sense "stun, make senseless"): from french appaler, from a- (from latin ad "to") + pâlir "grow pale".
- The sight of the accident appalled him.
- The atrocities of war appalled the world.
- The cruelty of the act appalled everyone who witnessed it.
- The state of the environment appalls me.
- The neglect of the animals appalls me.
Some random words: background, heathen, postgraduate