Prefixes:
* Pre-vital: Not yet vital or essential
* Re-vitalize: To make something vital again
* Un-vital: Not essential or lively
Suffixes:
* Vitality: The state of being vital or full of life
* Vitalize: To make something vital
* Vitalism: The belief that living organisms are governed by a vital force
* Vitalist: A person who believes in vitalism
Other:
* Invital: Not inviting or appealing (although this word is less common)
These are just a few examples, and the possibilities are really quite endless!