Word family noun office officer official officialdom officialese officiousness adjective official ≠ unofficial officious verb officiate adverb officially ≠ unofficially officiously
From Longman Dictionary of Contemporary Englishofficialeseof‧fi‧cial‧ese /əˌfɪʃəlˈiːz/ noun [uncountable] informal SLPGOa way of talking or writing used by government officials, that is unnecessarily difficult to understand 