Synonyms of life-and-death in English:

life-and-death


See definition of life-and-death

adjective

1‘a life-and-death decision’

SYNONYMS

vital, of vital importance, crucial, critical, urgent, pivotal, momentous, of great moment, important, all-important, key, serious, grave, significant, decisive, far-reaching, historic, weighty, consequential, of great consequence, epoch-making, apocalyptic, fateful, portentous

informal earth-shattering, world-shattering, earth-shaking, world-shaking

ANTONYMS

trivial, unimportant