footloose

自由自在的，不受束缚的英释中释adjfree to do exactly what you want because you have no responsibilities, for example when you are not married or do not have children

1 footloose students traveling around Europe.在欧洲旅游、自由自在的学生

2 When the kids leave home, you’ll be footloose and fancy-free (= free and without worries ) ..孩子离家之后，你就会自由自在、没有牵挂了。