Jumping a train is a term often used to describe the act of sneaking onto a moving train in order to avoid paying for a ticket or hitching a free ride. However, using the same term repeatedly can become monotonous and repetitive. Having a diverse vocabulary can enhance the quality of your writing or conversation. Here are some alternative terms to use instead of "jump a train": hop a freight, stowaway, clandestine travel, stealthy boarding, illicit entrance. By using a variety of synonyms, you can make your writing more interesting and engaging, while keeping your readers or listeners interested.