not care at all; not be bothered in the slightest
Idiomatic expression meaning to be completely untroubled or unaffected by something, as if it were as trivial as a mosquito bite. Often used in negative constructions.
He seemed completely unfazed by the criticism.
That person doesn't seem to care about failure at all.
A common, straightforward way to say 'don't mind/care'. 蚊の食うほどにも思わぬ is a more colorful, emphatic idiom.
Another idiomatic expression meaning 'think nothing of', but more vulgar and casual. 蚊の食うほどにも思わぬ is less crude.
Standard kanji form of the expression.
Variant using 程 instead of ほど; less common but acceptable.
Literally 'not even think of it as much as a mosquito bite'. The phrase uses the image of a mosquito bite as something trivial to express complete indifference.