Field of Endeavor is a term used to describe a particular area of work or study. The crossword solution for this term is 'ARENA, ' which can be used to refer to a place where people come together to compete or perform in a particular activity. This could be a physical ARENA, such as a sports stadium, or a metaphorical ARENA, such as the business world. In either case, it is a place where people come together to pursue their goals and ambitions.