adj. 1 authorized, legitimate, lawful, legal, authentic, bona fide, proper, true, accredited, valid, documented, licensed, sanctioned, endorsed, certified, verified, recognized, accepted I won't believe I've won till I hold the official notification in my own hands 2 ceremonial, formal, solemn, ritualistic, ceremonious, pompous, stiff, proper, seemly, decorous She has to make an acceptance speech at the official dinner
n. 3 See officer, 1, above.