What the prefix an suffix of no fever?

The word "no fever" doesn't have a prefix or suffix in the traditional sense. It's simply a two-word phrase where "no" acts as a negation of the noun "fever".

Here's why:

* Prefix: A prefix is a word part added to the beginning of a word to change its meaning. "No" is not attached to the beginning of "fever" to alter its meaning.

* Suffix: A suffix is a word part added to the end of a word to change its meaning or grammatical function. There is no word part added to the end of "fever" in this case.

Think of it like this: "no fever" is similar to saying "not having a fever" - a simple statement describing the absence of a fever.