a partner taking no active part in the conduct of a business.
Compare secret partner.
Origin of silent partner
An Americanism dating back to 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for silent partner
US and Canadian a partner in a business who does not play an active role, esp one who supplies capitalAlso called (in Britain and certain other countries): sleeping partner
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012