noun, noun which may take the genitive case particle 'no'
without portfolio
Used almost exclusively in the political phrase 無任所大臣 (minister without portfolio) or similar government contexts. Not a general-purpose word.
彼は無任所大臣として内閣に加わった。
He joined the cabinet as a minister without portfolio.
無任所の閣僚は特定の省を担当しない。
A minister without portfolio does not oversee a specific ministry.
Compound of 無 (without), 任 (duty, appointment), and 所 (place, office). The term is a direct calque from English 'without portfolio' or similar Western political terminology.