副ふく弐じ

noun

secondary; backup; assistant

Archaic term for a secondary or backup person or thing, often in official or military contexts. Not used in modern Japanese.

• 古こ文ぶん書しょには「副ふく弐じ」を置おく制せい度どが記しるされている。

  Old documents record a system of appointing a 'fukuji' (deputy).