The term OVERSTUDIOUS SORT can be broken down into two crossword solutions: WONK (4 letters) and SORT (4 letters). The term 'WONK' is often used to describe someone who is overly studious or obsessed with their work. It is derived from the word 'WONKY, ' which means 'unsteady or off-balance.' The term 'SORT' is a noun that refers to a group of people or things that are similar in some way. In this context, it could refer to a group of people who are overly studious or obsessed with their work.