The term 'unties' can be solved in a crossword puzzle using the words 'looses' (6 letters), 'loosens' (7 letters) and 'frees' (5 letters). All three words mean to release something from being bound or tied. 'Looses' is the most basic form of the word, meaning to set free from restraints. 'Loosens' implies that the restraints are being made less tight, while 'frees' implies that the restraints have been completely removed.