～わけがない
There is no logical way that can be true
You’ll be able to strongly reject a possibility because it conflicts with what you know or expect.
毎日しっかり点検しているのだから、車が故障するわけがありません。
mainichi shikkari tenken shite iru no da kara, kuruma ga koshou suru wake ga arimasen.
What do you think this sentence means?
Since we inspect it thoroughly every day, there is no way the car will break down.
Strongly deny a possibility
～わけがない expresses absolute confidence that something is impossible or out of the question ("there is no way that...", "it is impossible that...").
こんな簡単な問題、間違えるわけがない。
konna kantan na mondai, machigaeru wake ga nai.
There’s no way I’d get such an easy question wrong.
夜中の三時に店が開いているわけがない。
yonaka no sanji ni mise ga aite iru wake ga nai.
There’s no way the shop is open at three in the morning.
Attach わけがない to plain forms
Attach わけがない directly to plain verbs, i-adjectives, na-adjectives (na-adj + なわけがない), or nouns (noun + の／であるわけがない).
一日でこの分厚い本を全部読めるわけがない。
ichinichi de kono buatsui hon o zenbu yomeru wake ga nai.
There’s no way I can read this entire thick book in a single day.
あの時計は百万円もするんだよ。私に買えるわけがない。
ano tokei wa hyakuman’en mo suru n da yo. watashi ni kaeru wake ga nai.
That watch costs a million yen. There’s no way I could buy it.
妹は虫が大嫌いだ。一人でキャンプに行くわけがない。
imouto wa mushi ga daikirai da. hitori de kyanpu ni iku wake ga nai.
My little sister hates bugs. There’s no way she’d go camping alone.
今朝送った船便の荷物が、もうアメリカに着いているわけがない。
kesa okutta funabin no nimotsu ga, mou amerika ni tsuite iru wake ga nai.
There’s no way a package sent by sea mail this morning has already arrived in America.
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