ENEMIES' (4 letters) Opposing sides can refer to two sides of a conflict, such as a war or a disagreement. The term can also refer to two different groups that have opposing views on a particular issue. In either case, the two sides are usually in opposition to each other and may even be ENEMIES. The crossword solutions for the term 'opposing sides' are 'FOES' and 'ENEMIES', which both refer to people or groups that are in opposition to each other.