pro

An argument or consideration in favor of something.

One who supports a proposal or takes the affirmative side in a debate.

In favor; affirmatively.

Affirmative; supporting.

A professional, especially in sports.

An expert in a field of endeavor.

Professional.

A prefix of Latin or Greek origin, meaning ‘before,’ ‘in front,’ ‘fore,’ ‘forth,’ ‘forward.’ In some words, as proconsul, proprætor, pronoun, etc., it is properly the preposition (Latin pro, for, instead of).

A Latin preposition occurring in several phrases used in English.

For, on, or in behalf of, the affirmative side; — in contrast with con.