Sizing up is a term used to describe the process of assessing or evaluating something. Appraising (10 letters) is the act of making a judgment about the value, quality, or importance of something. Eying (5 letters) is the act of looking at something with interest or suspicion. MEASURING (9 letters) is the act of determining the size, amount, or degree of something. Together, these three terms can be used to describe the process of sizing up an object or situation.