pro
UK: prəʊ | US: proʊ
n. 1. An argument or evidence in favor of something; advantage.
n. 2. (Informal) A professional, especially in sports.
adj. 1. Supporting or favoring a proposition, opinion, etc. (e.g., pro-choice).
prep. 1. In favor of; for (e.g., pro bono).
The word "pro" originates from Latin prō, meaning "forward, for, or in favor of." It has retained its core sense of advocacy or support across centuries, appearing in terms like "proponent" (one who argues for) and "proactive" (acting in advance). In modern usage, it functions flexibly as a noun, adjective, or preposition, often signaling alignment with an idea (e.g., "pro-democracy") or professionalism (e.g., "pro athlete"). Its brevity and clarity make it a versatile prefix/standalone term.
She listed the pros and cons before making a decision.
He turned pro at the age of 18 after winning the championship.
The debate team argued pro the motion on free education.
Many lawyers offer pro bono services to low-income clients.
The article took a pro-environment stance on the policy.