pro
An advantage of something, especially when contrasted with its disadvantages (cons).
Example
“What are the pros and cons of buying a car?”
Other meanings
A person who supports a concept or principle.
A professional sportsman.
Word history
From Latin "prō" (on behalf of).
Where this comes from
This definition is adapted from “pro” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.