王事

おうじ
imperial or royal cause

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おうじ【王事】

〔王が関与する国事〕 the affairs of state of the king [emperor]; 〔王室に関する事柄〕 matters relating to the royal family.

●王事に尽くす render services to the king [emperor]; do one's bit for the king [emperor]

●王事をもって家事を辞す. Royal [Imperial] business comes before personal business.

●王事もろきことなし. The King's [Emperor's] undertakings are to be flawless.