APPALLING Meaning of APPALLING in English — appallingly , adv./euh paw"ling/ , adj.causing dismay or horror: an appalling accident; an appalling lack of manners.[ 1810-20; APPALL + -ING 2 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012