backers Play /ˈbakə/nounA person, institution, or country that supports someone or something, especially financially.he was the principal backer of the companysponsor,investor,subsidizer,underwriter,promoter,financier,patron,benefactor,benefactress,guarantor,supporter,friend SYNONYMS benefactorbenefactressfinancierfriendguarantorinvestorpatronpromotersponsorsubsidizersupporterunderwriter