Answer: unbound

AnswerCrossword Clue
UNBOUND"Prometheus ..." (Shelley drama)
UNBOUNDNot restrained or tied down
unboundfree; not attached, as by a chemical bond
unboundUNBIND, to free from bindings
unboundto unfasten or loose, as a bond or tie
unboundto release from bonds or restraint, as a prisoner; free
unboundnot bound, as a book