* Opulent is an adjective, meaning very rich and luxurious.
* Opulence is the noun form, referring to the state of being opulent.
While you can't directly use "opulent" as a verb, you could use verbs that convey the same meaning, such as:
* Indulge
* Lavish
* Embellish
* Adorn
* Shower (with gifts, etc.)
For example, instead of "The palace was opulently decorated," you could say "The palace was lavishly decorated."