少しも構わない
do not care a bit [a straw, a scrap, 【形式ばった表現】 an iota, 《口語》 a damn] 《about, whether…》
《口語》 couldn't care less 《if, whether》
少しも役に立たない
be completely useless.
読み方 すこしも
1
Not (in) the least; not the slightest; not at all; none whatever; nothing; no whit, not a whit, never a whit; not a bit of it