The phrase "feels one out" is often used to describe the act of getting to know someone or assessing a situation before making a decision. There are several synonyms for this phrase, including "gauging," "testing the waters," "getting a read on," "sizing up," and "evaluating." Each of these phrases conveys the idea of taking a careful, deliberate approach to understanding someone or something before taking action. Whether you're meeting someone new, considering a job offer, or evaluating a business opportunity, it's important to take the time to "feel things out" so that you can make an informed decision.