はずがない details

write + there's no way that

kaku hazu ga nai

there's no way that; cannot possibly

meaning: can't possibly write

弊社へいしゃの製品せいひんに、そのような欠陥けっかんがあるはずがない。

heisha no seihin ni, sono you na kekkan ga aru hazu ga nai.

Our products can't possibly have such a defect. formal

あの人ひとが嘘うそをつくはずないよ。

ano hito ga uso o tsuku hazu nai yo.

There's no way that person would lie. casual

contraction
past
polite

Examples

there's no way that; cannot possibly — categorical denial of a possibility

弊社へいしゃの製品せいひんに、そのような欠陥けっかんがあるはずがありません。

heisha no seihin ni, sono you na kekkan ga aruhazugaarimasen.

Our products can't possibly have such a defect. formal

あの人ひとが嘘うそをつくはずないよ。

ano hito ga uso o tsuku hazu nai yo.

There's no way that person would lie. casual

こんな時間じかんに銀行ぎんこうが開あいているはずがない。

konna jikan ni ginkou ga aite iru hazu ga nai.

There's no way the bank is open at this hour. neutral

Formation

{V}はずがないattaches to dictionary form
{N}のはずがないattaches to noun
na-adj + なはずがない — 元気なはずがないattaches to na-adjective

Variant notes

はずない — が drops in casual speech — 知[し]ってるはずないよ。

Notes

Negation lands on はず itself, not the verb, so the verb stays affirmative (来るはずがない "no way he'll come"). そんなはずはない, with は, is the set phrase for contradicting something you just heard or saw.

Related patterns

Similar

と思う
Negative expectation at two strengths — ないと思う files a mild personal opinion ("I don't think so"), はずがない categorically excludes the possibility and implies the speaker has grounds for saying so.

Opposite

はずだplain-antonym
Polarity applied to the conclusion, not the verb — はずだ deduces that X should hold, はずがない deduces that X cannot; both stand on the same reasoned はず.

Lookalikes

かもしれない
Both tails end in ない, but only はずがない's ない negates — かもしれない's しれない is frozen, so 来るかもしれない admits exactly the possibility that 来るはずがない categorically rules out.

Same meaning

no way that; can't possibly be

Pattern	Attaches to
`wake-ga-nai` (planned)	—