If you describe someone as footloose, you mean that they have no responsibilities or commitments, and are therefore free to do what they want and go where they want.
People that are single tend to be more footloose.
2.
See footloose and fancy-free
footloose in British English
(ˈfʊtˌluːs)
adjective
1.
free to go or do as one wishes
2.
eager to travel; restless
to feel footloose
footloose in American English
(ˈfʊtˌlus)
adjective
free to go wherever one likes or to do as one likes