What is the root word for clar?

The root word for "clar" is clarus, which is Latin for "clear" or "bright."

This root is found in many words, including:

* clarify: to make something clear or understandable

* clarity: the state of being clear or understandable

* declare: to state something officially or formally

* declaration: a formal statement

* illustrious: very famous and admired

* elucidate: to make something clear and easy to understand

Therefore, "clar" is a prefix that indicates clarity, brightness, or understanding.