Synonyms of primary in English:

primary


See definition of primary

adjective

1‘the police believe that crime detection is their primary role’

SYNONYMS
main, chief, key, prime, central, principal, foremost, first, most important, predominant, paramount, overriding, major, ruling, dominant, master, supreme, cardinal, pre-eminent, ultimate
informal number-one
ANTONYMS

secondary, subordinate

2‘you must start by removing the primary cause of the trouble’

SYNONYMS
original, earliest, initial, beginning, first
essential, fundamental, basic
ANTONYMS

secondary