Synonyms of all-important in English:

all-important


See US English definition of all-important

See UK English definition of all-important

adjective

1‘the town's all-important tourist industry’

SYNONYMS
vital, essential, indispensable, crucial, key, necessary, needed, required, requisite, important, vitally important, of the utmost importance, of great consequence, of the essence, critical, life-and-death, imperative, mandatory
urgent, pressing, burning, compelling, acute
paramount, pre-eminent, high-priority, significant, consequential
ANTONYMS

inessential