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whole family; entire family; all (members of) the family
all over the house; throughout the house
retainer of a daimyo; feudal domain; clan
家中の掃除を一日がかりでやった。
I spent the whole day cleaning the entire house.
家中が風邪をひいてしまった。
The whole family caught a cold.
合格の知らせを受けて、家中が喜びに包まれた。
When news of the acceptance arrived, the whole household was wrapped in joy.