わけがない — There's No Way
Expresses the speaker's strong conviction that something is impossible or extremely unlikely — 'there's no way that...' or 'it can't be that...'. It denies a possibility based on reason or common sense, carrying more emotional certainty than はずがない. Often shortened to わけない in casual speech.
Structure
[Verb / い-adj plain form] + わけがない ／ [な-adj な / Noun である] + わけがない
Examples
あんなに練習したのに、負けるわけがない。
Anna ni renshuu shita noni, makeru wake ga nai.
After practicing that much, there's no way we'll lose.
負ける (lose) + わけがない strongly denies the possibility of losing.
彼がそんな嘘をつくわけがない。
Kare ga sonna uso o tsuku wake ga nai.
There's no way he would tell such a lie.
嘘をつく (tell a lie) + わけがない = the speaker is convinced it's impossible.
この問題が簡単なわけがない。
Kono mondai ga kantan na wake ga nai.
There's no way this problem is easy.
な-adj 簡単 takes な before わけがない to deny the quality.
• Register: neutral to casual; the shortened わけない is common in speech. • Expresses subjective certainty grounded in reasoning, not a mere lack of evidence. • Do not confuse with わけではない, which softly denies rather than flatly rejects.
Commonly confused with
The JLPT rarely asks whether you recognise a pattern — it asks which of several similar patterns fits. These are the ones わけがない is tested against.
vs はずがない
はずがない is a logical/objective 'ought not to be so', while わけがない adds stronger emotional conviction that it's simply impossible.
vs わけではない
わけではない partially denies ('it's not that...'), whereas わけがない completely rejects the possibility.
More modal expressions
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