Crossword Clue:

that cannot be achieved

Answer	Crossword Clue
INDELIBLE	That cannot be forgotten
TRESS	Lock that cannot be opened
DRAFT	Call to arms (that cannot be denied).

WON	Word meaning "achieved victory" that I recently learned is not pronounced like "Juan"
EMU	Bird that cannot fly
EMUS	Big birds that cannot fly
EMUS	Some birds that cannot fly
EMUS	Certain birds that cannot fly
MIME	Entertainer that the blind cannot enjoy
TIS	"... .. an ill cook that cannot lick his own fingers": "Romeo and Juliet"
CORDELIA	Shakespeare character who says "Unhappy that I am, I cannot heave - My heart into my mouth"