The term 'TSK!' is an interjection used to express disapproval or disappointment. The crossword solutions for this term include 'TUT' (3 letters), 'SHAME' (5 letters), 'PITY' (4 letters), 'FIE' (3 letters), 'FORSHAME' (8 letters), 'TISAPITY' (8 letters), 'BEHAVEYOURSELF' (14 letters), 'NAUGHTYNAUGHTY' (14 letters), and 'MINDYOURMANNERS' (15 letters). All of these words are related to expressing disapproval or disappointment, and can be used to scold someone for their behavior.