Is Various A base or root word?

"Various" itself is not a base or root word. It is a derived word, meaning it comes from another word.

The root word of "various" is vary, which means "to change" or "to be different".

Here's how it works:

* Root: vary

* Suffix: -ous (meaning "full of" or "characterized by")

So, "various" literally means "full of variety" or "characterized by change".