わけがない details
Examples
there's no way that; impossible — flatly denies a possibility, usually pushing back against a claim or reasoning from context
そんな高いブランド品がこんな値段で買えるわけないじゃん。
sonna takai burandohin ga konna nedan de kaeru wake nai jan.
There's no way you can buy that expensive brand-name stuff at this price. casual
毎日あれだけ練習しているのだから、上達しないわけがない。
mainichi are dake renshuu shite iru no da kara, joutatsu shinai wake ga nai.
Practicing that much every day, there's no way he wouldn't improve. neutral
ご指摘のような不正に、弊社が関与しているわけがございません。
go shiteki no you na fusei ni, heisha ga kanyo shite iru wake ga gozaimasen.
There's no way our company is involved in the kind of misconduct you're pointing to. formal
Formation
plain clause + わけがない（N・na-adjは なわけがない）attaches to plain clause
Notes
common idiom, not a plain double negative. Bare and out of context, わけがない
can sound like a non sequitur; it reads best answering a stated premise.
Related patterns
Similar
Both categorically deny a possibility, but わけがない is a flat, emotive "no way" that resists softening and lives comfortably with じゃん／だろ, usually answering a stated premise, while はずがない is a reasoned "shouldn't be possible" that hedges freely (はずがないと思う) and reads as the neutral written default.
Opposite
- に違いないplain-antonym
Clean antonyms at the same certainty extreme — に違いない asserts "must be" with near-total conviction, わけがない asserts "no way" with equal conviction in the opposite direction; neither hedges the way はずだ／はずがない can.
Lookalikes
One particle apart at opposite strengths — わけがない flatly denies a possibility exists at all ("no way"), while わけではない only softens a claim without denying it ("not necessarily") — skimming past が／では swaps a hedge for a categorical denial.
Same わけ opening, unrelated grammar — わけがない denies that a PROPOSITION is true, and takes any predicate with any subject (高[たか]いわけがない、田中[たなか]さんが知[し]っているわけがない); わけにはいかない denies that an ACTION is permissible, and takes only a controllable verb with a speaker or in-group subject (行[い]くわけにはいかない, never ×降[ふ]るわけにはいかない).
Same meaning
no way that; can't possibly be
| Pattern | Attaches to |
|---|---|
| はずがない |