"From the ground up" means building something completely from scratch. Synonyms for this phrase include starting from scratch, beginning anew, starting from the bottom, and starting over from the very beginning. Other words that can be used to describe this process of starting from the beginning include rebuilding, creating anew, constructing from the foundation, and starting from square one. These synonyms are often used in business, entrepreneurship, and construction, but they can also be applied to personal projects and self-improvement goals. Whatever the context may be, starting from the ground up is a process that requires patience, persistence, and dedication.