The term 'extremely bad' can be described in many ways, such as EXECRABLE (9 letters), ABYSMAL (7 letters), DREADFUL (8 letters), AWFUL (5 letters), ATROCIOUS (9 letters), EVIL (4 letters), and TERRIBLE (8 letters). EXECRABLE means of very poor quality or extremely bad, while ABYSMAL is used to describe something that is extremely bad or of a very low standard. DREADFUL is used to describe something that is very unpleasant or bad, while AWFUL is used to describe something that is very bad or unpleasant. ATROCIOUS is used to describe something that is shockingly bad or cruel, while EVIL is used to describe something that is morally wrong or bad. Finally, TERRIBLE is used to describe something that is very bad or unpleasant.