Raw nerve refers to a person or situation that is highly sensitive or easily offended. There are various synonyms that one can use to describe this state of heightened sensitivity. For instance, someone who is touchy or irritable can be said to have fragile emotions or be prone to overreaction. Other related terms include being on edge, highly strung, or easily agitated. People who tend to take things personally and get hurt easily can be described as sensitive or delicate. Conversely, those who are thick-skinned or unflappable are less likely to be described as raw nerves. Overall, there are many words and phrases that can be used to convey the same sense as raw nerve, depending on the context and the degree of sensitivity.