When it comes to renting a vehicle for a short-term period, the term "rental car" is commonly used. However, there are several synonyms that can be used instead of this term. One synonym is "hire car," which is commonly used in British English. Another synonym is "rent-a-car," which is a popular brand name in the rental car industry. "Car rental," "auto rental," and "vehicle rental" are also frequently used synonyms. Moreover, "car hire" is another common term used in Australian English and New Zealand English. Regardless of the synonym used, renting a car is a great way to explore new places or travel in a convenient and cost-effective manner.