hellish(causing pain, discomfort or distress) adjective [UK: ˈhe.lɪʃ] [US: ˈhe.lɪʃ]
infernaladjective [UK: ɪn.ˈfɜːn.l̩] [US: ˌɪn.ˈfɝː.nl̩]No one has crossed that infernal desert in hundreds of years. = Nadie ha cruzado ese desierto infernal en cientos de años.