What is the prefix and suffix for vary?

The word "vary" doesn't have a prefix or suffix. It is a base word itself.

However, we can form words related to "vary" by adding prefixes and suffixes:

Prefixes:

* In- (meaning "not"): *invariable*

* Vari- (meaning "changing"): *variability*

* Super- (meaning "above"): *supervariable*

* Co- (meaning "jointly"): *covariation*

Suffixes:

* -ation: *variation*

* -able: *variable*

* -ing: *varying*

* -ied: *varied*

So, while "vary" itself has no prefix or suffix, we can use it to create new words by adding these prefixes and suffixes.