also: もとダンナ
noun
ex-husband; former husband
Refers to a woman's former husband after divorce. Casual term; in formal contexts 前夫 (ぜんぷ) may be preferred.
彼女は元旦那と子供のことでよく連絡を取っている。
She often contacts her ex-husband about their child.
元旦那が再婚したと聞いた。
I heard that my ex-husband remarried.
Compound of 元 (もと, 'former') and 旦那 (だんな, 'husband' or 'master').