単身赴任
たんしんふにん taking up a post away from one's family; job transfer without one's family
Why it means this
単身 (alone) + 赴任 (taking up a post) — being transferred to a job in another city and living there without your family.
Breakdown
- 単 ひとえ simple, one, single
- 身 み somebody, person, one's station in life
- 赴 フ proceed, get, become
- 任 ニン responsibility, duty, term
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