Explanation
Expresses 'there’s no way' or 'it’s impossible', indicating a high degree of certainty.
Formation
Verb-casual + わけがない, い-Adjective + わけがない, な-Adjective + なわけがない, Noun + のわけがない
Detailed explanation
The ～わけがない grammar point is used to express that something is highly unlikely or impossible. It can be translated as 'there's no way' or 'it's impossible'.
Examples
Kare ga kega wo shita kara, shiai ni kateru wake ga nai.
He got injured, so there's no way he can win the match.
Uso bakari itte iru hito wo, shinjiru wake ga nai.
There's no way I can believe someone who constantly lies.
Kanojo wa isogashii kara, kono paatii ni kuru wake ga nai.
She's busy, so there's no way she can come to this party.
Kinou wa zutto nete ita kara, sono jiken wo shiru wake ga nai.
I was asleep all day yesterday, so there's no way I could know about that incident.
Practice
Grammar content sourced from hanabira.org.