A Latin preposition signifying for, before, forth.
- An argument or consideration in favor of something: weighing the pros and cons.
- One who supports a proposal or takes the affirmative side in a debate.
- In favor; affirmatively: arguing pro and con.
- Affirmative; supporting: a pro vote.
- A professional, especially in sports.
- An expert in a field of endeavor.
- Professional: pro football.