noun
local mistress; local wife
Refers to a local woman who is treated as a wife by a foreign man already married elsewhere, often in the context of long-term business postings or expatriate life. The term carries a somewhat negative or informal connotation.
彼は海外赴任中に現地妻を作った。
He took a local mistress during his overseas assignment.
現地妻との間に子供がいる。
He has a child with his local wife.
妾 is a traditional term for a concubine or mistress, often with historical or formal overtones, while 現地妻 specifically refers to a local woman in a foreign setting.
Compound of 現地 (genchi, 'local') and 妻 (tsuma, 'wife'). The term likely arose in the context of Japanese businessmen posted abroad who maintained a local partner.