Synonyms of backer in English:

backer


See definition of backer

noun

1‘£3 million was provided by the project's backers’

SYNONYMS
sponsor, investor, subsidizer, underwriter, promoter, financier, patron, benefactor, benefactress, guarantor, supporter, friend
informal angel
rare Maecenas

2‘the backers of the proposition’

SYNONYMS
supporter, upholder, champion, defender, advocate, promoter, proponent, protagonist
seconder, second
North American booster