Since you asked, it's possible that terrible things can be both "good" in the sense of 'not evil' ("he's a terrific guy") and "good" in the sense of 'well done'

Since you asked, it's possible that terrible things can be both "good" in the sense of 'not evil' ("he's a terrific guy") and "good" in the sense of 'well done' ("Oz, the Great and Terrible").