外がい舅きゅう

noun

father-in-law (of the husband)

Rare term specifically for the husband's father-in-law. In modern Japanese, 義父 (ぎふ) or 義理の父 (ぎりのちち) are the usual words for father-in-law, without specifying which spouse's side.

• 古こ文ぶん書しょでは「外がい舅きゅう」が夫おっとの父ちちを指さすことがある。

  In old documents, 外舅 can refer to the husband's father.