The term 'Sound of Derision' refers to a sound made in response to something that is seen as ridiculous or foolish. The crossword solutions for this term are SNORT (5 letters), HOOT (4 letters), HAH (3 letters), and CATC (4 letters). A SNORT is a short, sharp sound made through the nose, usually in response to something funny or annoying. A HOOT is a loud, prolonged sound made by a person or an animal, often in response to something humorous. A hah is a sound made in response to something that is seen as amusing or ironic. Finally, a catcall is a loud whistle or shout made by someone to express disapproval or derision.