Definition of much less
: 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>
First Known Use of much less
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