Synonyms of crucial in English:

crucial


See definition of crucial

adjective

1‘a crucial debate on the Maastricht Treaty’

SYNONYMS
pivotal, critical, key, climacteric, decisive, deciding, determining, settling, testing, trying, searching
major, significant, influential, momentous, consequential, weighty, big, important, historic, epoch-making, far-reaching, life-and-death
ANTONYMS

minor

2‘confidentiality is crucial in this case’

SYNONYMS
very important, of the utmost importance, of great consequence, of the essence, critical, high-priority, pre-eminent, paramount, all-important, essential, vital, vitally important, indispensable, mandatory, urgent, pressing, compelling, necessary, needed, required, requisite
ANTONYMS

unimportant