1. In favor of, supporting, or advocating for:
* Pro-choice: Supporting the right to abortion
* Pro-environment: Supporting environmental protection
* Pro-democracy: Supporting democratic principles
2. Before, in front of, or ahead of:
* Prognosis: A prediction about the likely course of a disease
* Prologue: An introductory section of a book or play
* Proactive: Acting in advance to prevent problems
3. In favor of, for, or on behalf of:
* Pro bono: Working for the public good without pay
* Pro forma: As a matter of form, or as a formality
* Pro se: Representing oneself in court
4. Forward, outward, or outward:
* Project: To extend or jut outward
* Progress: To move forward
* Promote: To advance or further
It's important to consider the context of the word when interpreting the meaning of "pro."