What is a “sidepreneur”? It’s a descriptive word for a person who starts a side business while still working in a 9-5 job (also known as a side-hustler). Many people want to start a business but are not quite ready to take the leap into a full-time business and lose the comfort of a salaried job. Some sidepreneurs go on to full-time solopreneurship, but some stay as sidepreneurs forever. Strange as it might seem, some side-hustlers earn millions on the side and still don’t give up their jobs. They love having one foot in 9-5 work and one foot in entrepreneurship. You cannot do this kind of second shift of work if you are not brimming with energy.