Bankroller is a term often used to refer to someone who provides financial support, especially for a project or an organization. However, there are other words that can be used as synonyms for bankroller, such as sponsor, financier, patron, backer, investor, supporter, donor, contributor, benefactor, and underwriter. These terms usually depict individuals or organizations who provide money or other resources to support a cause or a venture. They differ in nuances and implications, depending on the context and the character of the recipient. Nevertheless, they all share a common trait of helping someone or something grow and develop, whether it is a business, a charity, a campaign, or a creative endeavor.