不可

不可

"不可" means "not allowed" or "impossible."

不可 is used here as a noun meaning 'not acceptable' or 'not possible.' It modifies 返品 (returns) indicating that returns are not allowed.

この商品は返品不可です。

This product is non-returnable.

不可 is used here as an adjective to describe '実現' (realization), conveying the idea that it is impossible or unfeasible to realize.

彼の提案は実現不可だと思います。

I think his proposal is unfeasible.

不可 is used here to express prohibition or rejection, indicating that neglecting safety measures is not permissible.

安全対策を怠ることは不可です。

Neglecting safety measures is unacceptable.