as in not to mention
to say nothing of
I never suggested that he was incompetent, still less that he was dishonest
Synonyms & Similar Words
Relevance
Example Sentences
Recent Examples of Synonyms for still less
let alone
Conjunction
-
But for other, clinical use cases, the accuracy is too low for LLMs to be deployed safely — let alone AI agents that operate autonomously without human oversight.—
Amy Feldman,
Forbes.com,
21 Jan. 2026 -
And most of the time, people don’t even know an algorithm made the decision that cost them a job, housing, benefits, or care, let alone how to challenge it.—
Letters to the Editor,
The Orlando Sentinel,
21 Jan. 2026
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Cite this Entry
“Still less.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/still%20less. Accessed 28 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
