わけがない

わけがない expresses a strong, confident denial of a possibility. It indicates that something is completely impossible or inconceivable given the speaker’s understanding of the situation. It often reflects the speaker’s belief or deduction more than a neutral fact, and it can sound firm or even a bit blunt. Typical contexts include predicting someone’s future action with certainty, denying a hypothetical outcome, or dismissing an improbable explanation. 常に否定的で強い確信を伴い、根拠がはっきりしていなくても「ありえない」と感じる場面で使われる。 Want to convey a sense of impossibility beyond normal doubt, sometimes with ようがない or どんなに〜ても as alternatives, but わけがない is more direct. Examples: 1) 彼が明日来るわけがない。 – There is no way he’ll come tomorrow. 2) この問題が自分で解けるわけがない。 – There is absolutely no way I can solve this problem. 3) 彼女がそんなことを言うわけがない。 – There is no way she would say something like that. 4) この機械は故障しているから、今動くわけがない。 – This machine is broken, so it can’t possibly be working.