Mild rebuke is a form of criticism that is not overly harsh or severe. It is often used to express disapproval or disappointment in someone's behavior. The crossword solutions for the term mild rebuke are REPROACH (8 letters), TUT (3 letters), and TOSH (4 letters). REPROACH is a verb meaning to express disapproval or disappointment, while TUT is an interjection used to express disapproval or disappointment. TOSH is a noun meaning nonsense or foolishness. Together, these words can be used to describe a mild rebuke.