What does root word ulous mean?

The root word "ulous" isn't a standalone word. It's actually a suffix, meaning "full of," "having the qualities of," or "characterized by." It's often used to form adjectives.

Here are some examples of words using the suffix "ulous":

* Fabulous: Full of wonder or amazement.

* Humorous: Having or showing humor.

* Grateful: Feeling or showing gratitude.

* Vicious: Full of violence or cruelty.

* Zealous: Full of enthusiasm or eagerness.

So, when you see "ulous" at the end of a word, it usually indicates a quality or characteristic associated with the word's base.