i quote https://usage_en.en-academic.com/3072/still_less
The principles, much more the practice, need a good deal of scrutiny. I didn't even see him, still less talk to him.
Much more (or s...
If X and Y are in the opposite order, with X being further out or less accessible, then the normal idiom is "NEGATIVE X or even Y":
Now over thirty years old, he had never dated or even associ...
