: to say nothing of : not to mention
—used especially to emphasize the improbability of a contrasting example
… he would never walk again, let alone play golf.—
Sports Illus.
Sports Illus.how many ever see an Ambassador or Minister, let alone a President—Robert Lacville
Robert Lacvillelet alone
2 of 2phrase
: to leave undisturbed
let the flowers alone
also
: to leave to oneself
wanted to be let alone
Examples of let alone in a Sentence
Conjunction
I don't have enough money for a new car, let alone a luxury sedan.
Recent Examples on the Web
Aj Willingham, AJC.com, 2 June 2026
No technical area is big enough to contain his enthusiasm, let alone the minimalist version at Bournemouth, which is the smallest in the Premier League.
—Thom Harris, New York Times, 2 June 2026
In turn, you’re left sensing that something has changed, but without ever fully knowing how to repair it — let alone whether or not repair is even possible.
—Mark Travers, Forbes.com, 1 June 2026
That’s way more equitable than decking because not everyone has a yard, let alone a space to put up a deck.
—Lisa Deaderick, San Diego Union-Tribune, 31 May 2026
See All Example Sentences for let alone
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Conjunction
Many city residents south of I-20 live a significant ways away from any major medical facilities, let alone emergency facilities.
—Aj Willingham, AJC.com, 2 June 2026
No technical area is big enough to contain his enthusiasm, let alone the minimalist version at Bournemouth, which is the smallest in the Premier League.
—Thom Harris, New York Times, 2 June 2026
In turn, you’re left sensing that something has changed, but without ever fully knowing how to repair it — let alone whether or not repair is even possible.
—Mark Travers, Forbes.com, 1 June 2026
That’s way more equitable than decking because not everyone has a yard, let alone a space to put up a deck.
—Lisa Deaderick, San Diego Union-Tribune, 31 May 2026
See All Example Sentences for let alone
Cite this Entry
“Let alone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/let%20alone. Accessed 3 Jun. 2026.
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