The answer to the crossword for the term 'LAST NAME IN COMEDY' is MARX, which is a four-letter word. The Marx Brothers were a famous comedy act in the early 20th century, consisting of five siblings: Groucho, Chico, Harpo, Gummo, and Zeppo. They were known for their slapstick humor and witty dialogue. The last name of the Marx Brothers is Marx, which is why it is the answer to the crossword.