"Get the lead out" is an idiomatic phrase that is often used to urge someone to hurry up or move faster. There are several synonyms that can be used to replace this phrase, including "hurry up," "speed up," "get a move on," "step on it," "pick up the pace," and "move it." Each of these phrases conveys a sense of urgency and encourages the listener to act quickly. Whether you are speaking to a co-worker who is lagging behind on a project or urging a friend to hurry up and get ready to go out, using one of these synonyms can help you convey your message effectively.