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master (of a house, shop, etc.)
husband
sir; boss; master; governor
patron of a mistress, geisha, bar or nightclub hostess; sugar daddy
alms; almsgiving; almsgiver
お店の旦那に長年お世話になっている。
I have been indebted to the shop owner for many years.
旦那が帰宅するまでに夕食の準備を済ませた。
I finished preparing dinner before my husband came home.
旦那さまがお帰りです。
The master of the house has returned.