For general development:
* Développer - This is the most common and general translation of "develop."
For specific development in certain contexts:
* Développer can also be used in the context of developing a film (développer un film), developing a website (développer un site web), or developing a project (développer un projet).
* Se développer - This phrase means "to develop oneself" and can be used in the context of personal growth or development.
* Développer can also be used in the context of developing a disease (développer une maladie).
Other options:
* Élaborer - This word means "to elaborate" and can be used in the context of developing a plan or theory.
* Concevoir - This word means "to conceive" and can be used in the context of developing an idea or project.
The best translation will depend on the specific context in which you want to use the word "develop."