I have a Master’s degree and no work experience outside of academia. How do I account for the gap on my resume when applying to retail jobs?

I got a Master's degree, but am struggling to find work in my field. I have decided that I will get a job wherever I can find one in the meantime. My main worry is, my only work history is with internships I did in college. I have only worked on my education (and internships, plus grad school) since I was 18.

I will probably leave my Master's off my resume when I apply, but what do I put for the four years I was working on my Bachelor's? I really don't want to lie, but I'm worried they won't hire me out of a fear that I will leave soon.

Has anyone else in this position had problems because of this?