1
general::
Phrase(s): footloose and fancy-free
Fig. without long-term responsibilities or commitments. • All the rest of them have wives, but John is footloose and fancy-free. • Mary never stays long in any job. She likes being footloose and fancy-free.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Having no attachments, especially romantic ones, and free to do as one pleases. For example, When I was in my twenties, footloose and fancy-free, I would travel at the drop of a hat. Both of these words have long been used separately; their pairing dates only from the 1900s.
American Heritage Idioms