Grammar › N2 · 10 Emphasis and attitude
〜っこない: no way; there is no chance
N2 · 10 Emphasis and attitude
Casually says that something absolutely cannot happen.
Verb stem + っこない. Only used in spoken language, among friends. It expresses a strong denial of possibility: できっこない. Compare 〜わけがない, which is a little more neutral.
Examples
そんな難しい問題、私にはできっこないよ。
There's no way I can solve such a difficult problem.
あいつが約束を守りっこないって。
He is never going to keep his promise.