The crossword solution for the term 'ALLY OPPOSITES' is 'FOES', which is a four-letter word. The term 'ally opposites' refers to two people or groups that are in opposition to each other, and the word 'FOES' is often used to describe such a relationship. Therefore, the crossword solution for the term 'ALLY OPPOSITES' is 'FOES', which is a four-letter word that describes two people or groups that are in opposition to each other.