Oxford Dictionary English sleeping partner nounnoun BrE BrE//ˌsliːpɪŋ ˈpɑːtnə(r)// ; NAmE NAmE//ˌsliːpɪŋ ˈpɑːrtnər// (British English) (North American English silent partner) Business people Add to my wordlistjump to other resultsa person who has put money into a business company but who is not actually involved in running it See related entries: Business peopleCheck pronunciation: sleeping partner oxfordlearnersdictionaries.com