The term "study at appearance" refers to analyzing one's physical features and characteristics in order to draw conclusions about their personality or behavior. Some synonyms for this phrase include "observe closely," "scrutinize," "analyze," "inspect," and "examine." These words all suggest a deliberate and thorough investigation of a person's outward appearance, with the goal of gaining insight into their inner workings. It is important to note, however, that while studying appearance can offer useful information, it should not be relied on exclusively and should be balanced with other forms of assessment, such as getting to know the person and their actions over time.