let alone

1. Not to mention, as in We have no room for another house guest, let alone an entire family . [c. 1800]

2. See leave someone alone .

Example Sentences

It will not bring an end to violence, let alone usher in democracy, but it would open the space for serious negotiations.

From BBC

Marvel has yet to announce a third “Black Panther” film, let alone Coogler’s involvement in another installment of the popular franchise.

From Los Angeles Times

But he added that he'd "be amazed if the sequel is remembered by Christmas, let alone in 24 years".

From BBC

“We do not have four years to not do things, let alone go backwards,” said Ken Alex, director at the Center for Law Energy and Environment at UC Berkeley.

From Los Angeles Times

“Whereas in some bus stops there isn't even the basic timetable, let alone the live arrival updates.”

From BBC