What is the suffix for elated?

There is no suffix for "elated." Elated is already a complete word, an adjective meaning "feeling or showing great happiness and excitement."

It's possible you are thinking of a related word or phrase, such as:

* Elatedly: This is the adverb form of "elated," meaning "in an elated manner."

* Elatedness: This is the noun form of "elated," meaning "the state of being elated."

Let me know if you were thinking of a different word, and I'll be happy to help!