appall
Cross references: 1. dismay ap.pall also ap.pal \*-'po.l\ vb also ap.palled; or ap.pall.ing [ME appallen, fr. MF apalir, fr. OF, fr. a- (fr. L ad-)] + palir to grow pale, fr. L pallescere, incho. of palle-re to be pale obs : WEAKEN, FAIL : to overcome with fear or dread