損そんになる

expression, godan verb (-ru)

result in a loss; be disadvantageous; not pay off

Describes a situation or action that ends up being a financial or practical loss. Often used when something turns out to be not worth the cost or effort.

• そんなに安やすく売うったら損そんになるよ。

  If you sell it that cheap, you'll end up losing money.

• この取とり引ひきは結けっ局きょく損そんになった。

  This deal ended up being a loss.