"apall" is probably misspelled. Trying appall instead Definition of appall
1
[ verb ] strike with disgust or revulsion

Examples

"The scandalous behavior of this married woman shocked her friends"

2
[ verb ] fill with apprehension or alarm; cause to be unpleasantly surprised

Examples

"I was horrified at the thought of being late for my interview" "The news of the executions horrified us"

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