Words with the root "val" meaning "strong" or "powerful":
* Valid: Legally or officially acceptable.
* Valor: Great courage in the face of danger, bravery.
* Valiant: Brave, courageous.
* Valorous: Full of valor, brave.
* Valedictorian: The student who gives the farewell address at a graduation ceremony.
* Invalid: A person who is weak or ill. (This word is technically the opposite of "valid," but its root is still "val.")
Words with the root "val" meaning "worth":
* Value: The importance, worth, or usefulness of something.
* Evaluate: To determine the worth or significance of something.
* Valuable: Having great worth or importance.
* Devalue: To reduce the value of something.
* Equivalent: Having the same value.
Words with the root "val" meaning "farewell":
* Valediction: A farewell address.
* Valedictory: Relating to a farewell.
These are just a few examples, and there are many more words in the English language that contain the root "val." The root often appears in combination with other prefixes and suffixes, making for a versatile and widely used root.