There are several synonyms for the phrase "get off." One common phrase is "alight," which is often used when referring to getting off a train or bus. It is more formal than the phrase "get off," and is often used in written communications. Another synonym is "descend," which is typically used when referring to getting off a high place, such as a ladder or a mountain. "Dismount" is a word that is used when referring to getting off of a horse, bike, or similar vehicle. "Disembark" is another synonym that is often used when referring to getting off a boat or plane. Overall, there are many different synonyms for "get off," and the specific one used depends on the situation and context.