Synonyms of official in English:

official


See definition of official

adjective

1‘an official inquiry into the state of the hospital’

SYNONYMS
authorized, accredited, approved, validated, authenticated, authentic, certified, endorsed, documented, sanctioned, licensed, formal, recognized, authoritative, accepted, verified, legitimate, legal, lawful, valid, bona fide, proper, true, ex cathedra, signed, sealed, and delivered, signed and sealed
informal kosher
ANTONYMS

unofficial, unauthorized

2‘they were arrayed in all their finery for some official function’

SYNONYMS
ceremonial, formal, solemn, ritualistic, ceremonious
pompous, stiff, bureaucratic, proper
informal stuffed-shirt
ANTONYMS

informal


noun

1‘a union official’

SYNONYMS
officer, office-holder, office-bearer, administrator, executive, appointee, functionary
bureaucrat, dignitary, mandarin
representative, agent
derogatory apparatchik
British jack-in-office