Backing is a term that refers to support or assistance given to a person or an idea. There are several synonyms of backing that can be used interchangeably, depending on the context of the sentence. Some of the most common synonyms of backing include support, endorsement, aid, assistance, patronage, sponsorship, help, and encouragement. These words all carry similar meanings to backing and can be used to indicate support for a cause, project or a person. Whether you use the word backing or its alternatives, the message is clear: support is essential for success in any endeavor, and it's important to have allies who have your back.