Mild reproof is a form of discipline that is used to correct behavior without being overly harsh. It is often used in situations where a more severe punishment would be inappropriate. The three crossword solutions for the term mild reproof are TUT (3 letters), TSK (3 letters), and TUTTUT (6 letters). TUT is an expression of disapproval, TSK is an interjection used to express disapproval or disappointment, and TUTTUT is an imitation of a TUT, which is an expression of disapproval.