The phrase "makes one hair stand on end" is often used to describe a feeling of fear or intense emotion. There are several synonyms for this expression, such as "sends shivers down one's spine," "gives one goosebumps," "makes one's skin crawl," and "gives one the creeps." All of these phrases evoke a sense of discomfort or unease, often caused by something eerie or unsettling. Each of these expressions helps to convey a powerful emotion and can be useful in adding depth and nuance to one's writing or conversation. When used intentionally, these synonyms can help to cement a particular message or feeling in the reader or listener's mind.