much-less

listen to the pronunciation of much-less
English - Turkish
şöyle dursun: I can't walk, much less run. Koşmak şöyle dursun, yürüyemiyorum
şöyle dursun

Almanca şöyle dursun, İngilizce konuşamıyor. - He cannot speak English, much less German.

Koşmak şöyle dursun, bebek yürüyemez. - The baby can't walk, much less run.

English - English
Let alone; to say nothing of

This is such a terrible CD; I didn't listen to it, much less buy it.

a lot fewer in degree or amount
And certainly not: "Happiness is an emotion not often spoken of at the magazine, much less experienced" (Brendan Gill)