What is the antonym for tar?

There isn't a single perfect antonym for "tar" because it depends on the context. Here are some possibilities, depending on the meaning you're looking for:

If you're talking about the sticky black substance:

* Clean: This is a general antonym for something sticky or dirty.

* Smooth: This refers to the opposite of the rough, sticky texture of tar.

* Water: This is a contrasting substance, particularly if you're referring to tar being used to seal or waterproof something.

If you're talking about the verb "to tar," meaning to smear with tar or to damage someone's reputation:

* Cleanse: This refers to removing tar or to restoring someone's reputation.

* Praise: This is the opposite of damaging someone's reputation.

* Protect: This is the opposite of using tar to seal or waterproof something, as tar is often used to prevent something from being damaged.

To give you a better antonym, I need more context. What is the specific meaning of "tar" in the situation you are thinking about?