Japanese DictionaryDefinition of とんでも無い
- (adj-i) unthinkable; unexpected; outrageous; offensive
ジャックが音楽が苦手なんてとんでもない、それどころか、ピアノを弾くのがうまい。
It isn't true that Jack is no good at music; on the contrary, he plays the piano well. - (exp) absolutely not!; not at all!; far from it!; impossible!; preposterous!; what a thing to say!; no way!; bullshit
「君はそれを終えたか」「とんでもない、始めたばかりだ」
"Have you finished it?" "On the contrary, I've just begun." - don't mention it; you're welcome