The term 'Defendants' Opponents' refers to the people who are suing the defendants in a legal case. These people are known as 'PLAINTIFFS' or 'Suers', which is a five-letter word that can be used to solve the crossword puzzle. PLAINTIFFS are individuals or organizations that initiate a lawsuit against another person or organization in order to seek compensation for an alleged wrong. The Defendants' Opponents are the people who are bringing the lawsuit against the defendants, and they are seeking some form of relief from the court.