Legal Definition of Silent partner: A partner not generally known as a co-owner of a firm or business, yet is entitled to the rights of partnership; a dormant partner; a secret partner | Learn about the legal definition of a silent partner and how they can benefit your business. Discover the responsibilities, rights, and limitations of this co-owner, and understand the importance of having a clear agreement in place. With a silent partner, you can receive financial support and guidance while maintaining control over your business operations. Click to dive deeper into the world of silent partnerships