Directly Related:
* Alteration: A change or modification.
* Alternate: To take turns or switch between two things.
* Alternative: Something that can be chosen instead of something else.
* Alter ego: A second self, often a different personality.
Less Direct, but Related in Meaning:
* Altered: Changed or modified.
* Alterable: Capable of being changed or modified.
* Unalterable: Not capable of being changed or modified.
* Alterationist: One who believes in or advocates for change.
* Alterationism: The belief in or advocacy of change.
Words with the Root "Alter" but a Different Meaning:
* Aulter: An old word for "altar", a religious structure.
Let me know if you'd like to explore any of these in more detail or if you have other questions about the root word "alter"!