The prefix "Pro-" comes from Latin, meaning "for" or "in favor of." It is often used to indicate support or advocacy for a particular idea, cause, or group. For example, a proponent is someone who actively supports a proposal or idea, while pro-democracy movements aim to promote democratic values and practices. In addition to indicating support, "Pro-" can also suggest being ahead or in favor of progress. For instance, a proactive approach means taking initiative and acting in advance to address potential issues. This prefix helps convey a sense of positivity and forward-thinking in various contexts.