Wiktionary
conj. (context idiomatic English) used by the speaker to mention another important, usually related, point; an apophasis
Usage examples of "to say nothing of".
The user is left with a feeling of disorientation (to say nothing of annoyance) stemming from a kind of metaphor shear--you realize that you've been living and thinking inside of a metaphor that is essentially bogus.
Our constant and successive descents had taken us quite thirty leagues into the interior of the earth, that is to say that there were above us thirty leagues, nearly a hundred miles, of rocks, and oceans, and continents, and towns, to say nothing of living inhabitants.
He had his belt stuck full of daggers, a long sword at his thigh, a rusty arbalest on his left, a large jug of wine before him, to say nothing of a trollop with open bosom on his right.
When they produce their kind they give them a body and six legs, to say nothing of a head.
Finding a husband for Angelina that wouldn't drag the family down was going to be hard, to say nothing of expensive.
Only a long stretch of the imagination could label Vari as a blacksmith's assistant, to say nothing of the children.
Besides, he would miss the sham bull-fight, for which the trumpet was already sounding, to say nothing of the puppet-show and the other wonderful things.
If her hands had known water (to say nothing of soap) during the past twelve months I am much mistaken.
There is something immeasurably mean, to say nothing of the cruelty, in placing the loyal negroes of the South under the political power of their Rebel masters.
Few colored men from the South are as yet able to stand up against the severe and increasing competition that exists in the North, to say nothing of the unfriendly influence of labor organizations, which in some way prevents black men in the North, as a rule, from securing occupation in the line of skilled labor.
But they are today so complex that no one can understand them, even in one single country, to say nothing of all countries taken together.
He also called Bukawai's attention to the fact that he, Mbonga, was very poor, that his people were very poor, and that ten goats were at least eight too many, to say nothing of a new sleeping mat and the copper wire.