What is the word part after all affixes have been removed?

The word part after all affixes have been removed is called the root or base.

Here's a breakdown:

* Affixes: These are word parts added to the beginning (prefixes) or end (suffixes) of a word to change its meaning or grammatical function.

* Root/Base: This is the core meaning-bearing part of a word. It's the essential element that remains after all the prefixes and suffixes are stripped away.

Example:

* "Unbelievable"

* Prefix: "Un-"

* Suffix: "-able"

* Root: "believe"

So, after removing the prefix "un-" and the suffix "-able", we are left with the root "believe", which carries the core meaning of the word.