What is a root word for insolent?

The root word for "insolent" is "sol", which comes from the Latin word "solere," meaning "to be accustomed to" or "to be used to."

However, "insolent" itself is a compound word formed by adding the prefix "in-" (meaning "not" or "opposite of") to "solent" (meaning "accustomed to behaving in a disrespectful way").

Therefore, while "sol" is a root word, it doesn't directly capture the full meaning of "insolent."