The word "toll road" refers to a type of highway or expressway where a fee is charged for use. The antonyms for toll road would be "free road," "non-toll road," "public road," "state road," "county road," "local road," "unrestricted road," and "open road." These roads are accessible to all vehicles without the need to pay a toll, making them a more affordable option for travelers. In some countries, drivers may only need to pay a one-time fee for using certain roads or highways, which would also classify them as non-toll roads. Regardless, the primary difference between toll roads and their antonyms lies in the cost of travel.