Private study is an activity that involves studying or researching in a private setting, away from the distractions of everyday life. The term 'private study' can be broken down into two words: DEN (3 letters) and SANCTUM (7 letters). DEN is a noun that refers to a room in a house that is used for relaxation or work, while SANCTUM is a noun that refers to a place that is kept private and secure. Together, these two words form the term 'private study, ' which describes a place where one can study or research without interruption.