1. A joining. Joinder in action, joinder in demurrer, joinder in issue, &c., when both parties in a suit have joined issue, and have agreed to rest the decision of the cause upon the truth of the fact in question.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• jinder,
• joindure,
• noinder,
• koinder,
• ioinder,
• uoinder,
• jiinder,
• jkinder,
• jpinder,
• j0inder,
• j9inder,
• jojnder,
• joknder,
• joonder,
• jo9nder,
• jo8nder,
• Joynder,
• Joindor,
• Jointdor,
• Joyndor

The adjective form of the word "Joinder" is "joinderly". However, it is not a commonly used adjective.

The plural of the "Joinder" can be the "joinders".

The singular of the "Joinder" can be the "Joinder".