The term REPROACHFUL SOUND can be summarized by two crossword solutions: SNORT (5 letters) and TSK (3 letters). A SNORT is a sound made by quickly exhaling through the nose, usually to express disapproval or contempt. It is often used as an interjection to indicate disapproval or annoyance. TSK is an interjection used to express disapproval, regret, or pity. It is also used to indicate that someone has done something wrong or foolish. Both of these sounds are used to express disapproval or disappointment.