let alone

Idioms  

1. See leave someone alone .

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

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Example Sentences

Their neighborhoods are surrounded by four-lane highways with no sidewalks let alone any bike infrastructure.

From The Wall Street Journal • Jun. 2, 2026

There’s little clarity about where things stand in college athletics right now, let alone where they’re going.

From Los Angeles Times • May 31, 2026

Even by mid-summer standards, the current hot spell would be significant - let alone for May.

From BBC • May 25, 2026

"This heat would be exceptional in the UK even in mid-summer, let alone May," it said on X.

From Barron's • May 25, 2026

Do African Americans want to pressure Obama on any issue, let alone issues of race?

From "The New Jim Crow" by Michelle Alexander