You might be thinking of "-ize", which is a common suffix used to create verbs from nouns or adjectives. It signifies "to make or become" something.
Here are some examples of words with the "-ize" suffix:
* Modernize: To make something modern.
* Civilize: To make something or someone civilized.
* Categorize: To put something into a category.
* Realize: To become aware of something.
* Colonize: To establish a colony in a new territory.
Let me know if you'd like to explore more words with "-ize"!