The phrase "let roll" is often used to indicate the start of something or to encourage someone to take action. Fortunately, there are plenty of synonyms that can be used in its place. Some examples include: get going, get started, kick off, commence, initiate, launch, begin, start, and set in motion. Each of these phrases conveys a similar meaning to "let roll" and can be used in various contexts depending on the situation. So, whether you're trying to motivate yourself or someone else, there are plenty of options to choose from that will get the ball rolling!