emphasis You can use appalling to emphasize that something is very great or severe. I developed an appalling headache. + appallingly ap·pal·ling·ly It's been an appallingly busy morning. see also appal
Something that is appalling is so bad or unpleasant that it shocks you. They have been living under the most appalling conditions for two months. = dreadful + appallingly ap·pal·ling·ly He says that he understands why they behaved so appallingly