: not to mention —used especially in negative contexts to add to one item another denoting something less likely
He had trouble paying for a car, much less a high-definition TV.
And so it appears that he is never going to get out of the eighth grade, much less ever make it to college.—Thomas Meehan
Examples of much less in a Sentence
after spraining his ankle, the gymnast hadn't been expected to appear in today's event, much less win it
Love words? Need even more definitions?Merriam-Webster unabridged