vice-minister; deputy minister
Historical title in the ritsuryō system; not used in modern government. The reading たゆう is also attested but less common.
大輔 was one of the official posts in the ritsuryō system, serving as the deputy minister of a ministry.
Standard kanji form for the historical title.
From Middle Chinese 大輔 (dà fǔ), meaning 'great assistant' or 'deputy'. The reading たいふ is the go-on pronunciation, while たゆう is a later shift.