Affixes

An affix is a piece of a word that is added to a root or base word that changes the meaning.

Prefixes and suffixes are types of affixes.​

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Affix

​​Root word

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A root stem is a part of a word that has meaning, but cannot stand on its own. It is usually a Latin or Greek root, but not always.

Ex.) aud- hear

audible- able to be heard​

Root stem​

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A root word is part of a word that has its own meaning as a regular word.

Ex.) ​act- to move or do

actor- someone who acts​

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Suffixes go after a root.

Ex.) -ness: makes a word a noun (a person, place, thing, or idea)

-able: ​able to do something

​Suffixes

Prefixes go before a root.

Ex.) pre: before

post: after

un: not​

Prefixes