silent partner
sleeping partner

He is also said to be a major silent partner among the leadership of the company.

All it means is that I become a silent partner in your body.

I can stay out of sight - you a silent partner.

The room became silent as the twenty or so partners turned to the head table.

But it would not agree to be a silent partner, sources said.

I had a silent partner, a very close friend who went to Cuba after the war.

Michael Chance was the main investor along with a few silent partners.

The family holding is owned by about 26 silent partners.

His silent partners never let go of their hold on him.

Some time next day, he was convinced, if not sooner, his three silent partners would come together.