• awful, dreadful, god-awful, gruesome, horrendous, horrible, terrible, terrific, terrifying, tremendous
• awfully, dreadfully, horrendously, horribly, shocking, shockingly, something, terribly, terrifyingly, tremendously, wickedly
• I am awfully sorry, I am dreadfully sorry
• what a dreadful time you've been
• I am awful glad you came
• to make one's flesh crawl, to make one's flesh creep
• something dreadful has happened