What is a synonym for proper?

Here are some synonyms for "proper," depending on the context:

Formal:

* Appropriate

* Suitable

* Correct

* Accurate

* Precise

* Exact

Informal:

* Right

* Decent

* Good

* Nice

* Fine

* Okay

* Acceptable

Other:

* Suitable

* Adequate

* Befitting

* Due

* Formal

* Legitimate

* Regular

* Standard

It's important to choose the most fitting synonym based on the specific context in which you are using the word "proper."