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mourning period; (in) mourning
忌中の札が玄関に掲げられていた。
A mourning sign was displayed at the entrance.
忌中のため年賀状を控えた。
I refrained from sending New Year's cards due to mourning.
忌中は慶事への出席を遠慮する。
During the mourning period, one refrains from attending celebrations.