The term WORK WITHOUT A NET is a phrase used to describe a situation in which someone takes a risk without any safety NET or backup plan. In this case, the three letter answer is NET, which stands for Network. This phrase is often used to describe a situation in which someone takes a risk without any safety NET or backup plan, such as starting a business or investing in a new venture. It can also be used to describe someone who takes a job without any guarantees of success or security. In either case, the phrase implies that the person is taking a risk and must rely on their own skills and resources to succeed.