Answer: RUBEGOLDBERG

The term "Rube Goldberg" refers to a type of complex machine or contraption that performs a very simple task in an indirect and convoluted manner. It typically involves a series of interconnected devices or mechanisms that work together to achieve a specific end goal. The term originated from the American cartoonist Rube Goldberg, who was known for depicting such intricate and humorous contraptions in his illustrations.

Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Only person whose first and last name together is listed as an adjective in Merriam-Webster. Explanations are generated by AI and may be inaccurate.