非ひ公こう式しき

noun which may take the genitive case particle 'no', na-adjective, noun

informal; unofficial

Describes something not officially recognized, authorized, or formal. Often used for meetings, announcements, or settings that lack official status.

• 非ひ公こう式しきの会かい合ごうで意い見けんを交こう換かんした。

  They exchanged opinions at an informal meeting.

• その