A more thorough explanation:

Definition: Et alii e contra is a Latin phrase that means "and others on the other side." It was commonly used in the Year Books to describe a joinder in issue.

Example: In a court case, if one party presents an argument, the other party may respond with their own argument. If additional parties join the argument on the opposing side, they may be referred to as "et alii e contra."

Explanation: The example illustrates how the phrase "et alii e contra" is used to describe additional parties who join an argument on the opposing side. It is a way to refer to multiple parties without listing each one individually.