The term 'most vile' can be described by three crossword solutions: SLIMIEST (8 letters), BASEST (6 letters), and EVILEST (7 letters). SLIMIEST refers to something that is extremely unpleasant or repulsive, while BASEST implies the lowest level of morality or decency. EVILEST is used to describe something that is extremely wicked or immoral. All three words are used to describe something that is considered to be the most vile.