The phrase "check up" refers to a medical examination to assess overall health or to ensure that a particular condition is under control. However, there are a number of synonyms for the term "check up" that can be used in different contexts. Such synonyms are health examination, physical, medical check-up, doctor's visit, medical examination, routine check-up, assessment, diagnostic testing, and monitor. By using different word choices, we can convey the meaning in a more precise and context-specific manner. Whether you're discussing a health check-up or a diagnosis, it's important to choose the right synonym for the context you're in.