verb (used with object), ap·palled, ap·pal·ling.
verb (used with object)
- to fill or overcome with horror, consternation, or fear; dismay: He was appalled by the damage from the fire. I am appalled at your mistakes.
verb -pals, -palling or -palled or US -palls, -palling or -palled
- (tr) to fill with horror; shock or dismay
1570s, “enfeebled;” c.1600, “dismayed;” past participle adjective from.
also appal, early 14c., “to fade;” c.1400, “to grow pale,” from Old French apalir “become or make pale,” from a- “to” (see ) + palir “grow pale,” from Latin pallere (see ). Meaning “cause dismay or shock,” is 1530s. Related: ; .