This means 'there is no way that...' or 'it's impossible that...'. You use it when you are sure something cannot be true.
Clause + わけがないPrimary
This means 'there is no way that...' or 'it's impossible that...'. You use it when you are sure something cannot be true.
あんなに頭のいい彼が、こんな簡単な計算を間違えるわけがない。
There's no way that someone as smart as him would make a mistake on such a simple calculation.
経験豊富な彼が、この程度のプロジェクトを失敗したわけがない。きっと何か予期せぬトラブルがあったのだろう。
There's no way that he, with all his experience, failed a project of this level. There must have been some kind of unexpected trouble.
このレストラン、全然美味しくないわけがない。ミシュラン三つ星なんだから。
There's no way this restaurant isn't delicious. After all, it has three Michelin stars.
約束の時間にいつも遅れる彼女が、今日だけ時間通りに来るわけがないと思っていたよ。
I knew there was no way she, who is always late for appointments, would arrive on time just for today.
弊社の最新モデルが他社製品に劣るわけがありません。品質には絶対の自信を持っております。
There is absolutely no way our company's latest model is inferior to competitors' products. We have absolute confidence in its quality.
Both phrases mean "no way." But "わけがない" uses facts to say something is impossible. "はずがない" uses your strong feeling or what you expect. For example, you use "わけがない" if you have proof. You use "はずがない" if you just really believe something.
Watch out: These two phrases sound similar. But they mean different things. '〜わけがない' means something is impossible. '〜わけにはいかない' means you cannot do something. This is because of rules or other reasons. For example, 'I can't tell him the truth' is different from 'There's no way I won't tell him the truth'.
Use this when you want to say something is impossible. You think it cannot be true. You have a good reason for this belief. It shows strong disagreement.
Often confused with(2)
More formal alternatives(1)
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