When it comes to studying, some people prefer to do it in a more impassive manner. Some synonyms for the phrase "study at impassive" include studying stoically, studying dispassionately, studying apathetically, and studying unemotionally. Additionally, studying objectively and studying without bias can also imply a sense of impassiveness. Regardless of the chosen synonym, studying at impassive can be an effective way to remain focused and improve retention. However, it's also important to note that a lack of emotion during studying can hinder creativity and hinder the development of deeper understanding. Therefore, it's important to find a balance between impassivity and emotional investment during studying.