The term 'MOST CURIOUS' can be broken down into three crossword solutions: FUNNIEST (8 letters), ODDEST (6 letters), and NOSIEST (7 letters). The term 'CURIOUS' is often used to describe someone who is inquisitive and eager to learn, so these three words can be seen as describing the most extreme versions of this trait. FUNNIEST implies that the person is the most humorous and entertaining, ODDEST suggests that they are the most eccentric and unique, and NOSIEST implies that they are the most nosy and intrusive.