i-adjective
Casual adjective meaning something is easy or not a big deal. Often used in informal speech.
そんなのわけないよ。
That's easy.
この問題はわけなく解けた。
I solved this problem easily.
expression
there's no way that ...
Contraction of わけがない, used as a phrase to express strong denial or impossibility. Informal.
See also: わけがない
彼がそんなこと言うわけない。
There's no way he would say such a thing.
一人で全部食べられるわけないでしょ。
There's no way you can eat all of that by yourself.