noun
chargé d'affaires ad interim; acting chargé d'affaires
A diplomatic rank: a person temporarily heading a diplomatic mission in the absence of the ambassador or permanent chargé d'affaires. Used in formal and official contexts.
大使が不在の間、臨時代理公使が業務を代行する。
While the ambassador is absent, the chargé d'affaires ad interim handles the duties.
彼は臨時代理公使としてワシントンに派遣された。
He was dispatched to Washington as acting chargé d'affaires.