Is the word nym a suffix?

Yes, "nym" is a suffix. It means "name" and is used to form words related to names.

Here are some examples:

* Pseudonym: A false name.

* Synonym: A word with the same meaning as another word.

* Antonym: A word with the opposite meaning as another word.

* Acronym: A word formed from the first letters of a phrase.

Let me know if you have any more questions.