Definitions

1. noun

a person who supports or advocates for something, such as a politician, athlete, or artist.

“The pro at the tennis tournament was a local celebrity.”

2. adjective

in favor of or supporting something; professional.

“The pro version of the software included additional features.”

3. preposition

in favor of or supporting something.

“He came out pro for the new policy.”

4. prefix

in favor of or supporting something; professional.

“pro-life, pro-choice”