The term 'not tied down' can be described by a variety of words, such as 'FREE', 'LOOSE', 'MOBILE', 'FLOATING', 'fancyfree', 'FOOTLOOSE', 'freestanding', and 'playingthefield'. These words all describe a lack of restriction or commitment, and can be used to describe a person or situation that is not bound by any obligations. For example, someone who is 'FREE' is not obligated to do anything, while someone who is 'FOOTLOOSE' is able to move around without any restrictions. Similarly, someone who is 'playingthefield' is not committed to any one thing, but instead is exploring different options.