Synonyms of momentous in English:

momentous


See definition of momentous

adjective

1‘a momentous decision’

SYNONYMS

important, significant, epoch-making, historic, apocalyptic, headline, fateful, portentous, critical, crucial, vital, life-and-death, decisive, pivotal, serious, grave, weighty, consequential, big, great, far-reaching, life-changing, of importance, of moment, of significance, of consequence

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

ANTONYMS

unimportant, trivial, insignificant