What is a antonym of windshield?

There isn't a true antonym for "windshield" in the same way there is for words like "hot" and "cold." "Windshield" is a specific part of a car, so an antonym would need to be something that is not part of a car.

Here are some words that could be considered the opposite of "windshield" depending on the context:

* Rear window: If you're talking about the location, the rear window is the opposite of the windshield.

* Interior: If you're thinking about the function of the windshield (protecting the interior from the elements), then "interior" could be considered an opposite.

* Open: If you're thinking about the state of the windshield, "open" is the opposite of "closed," which is the state of a windshield when it's in place.

However, without more context, it's difficult to give a definitive antonym for "windshield."