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
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Example Sentences
Recent Examples of Synonyms for still less
let alone
Conjunction
-
Apple’s Siri lags behind the likes of Microsoft, OpenAI’s ChatGPT, Anthropic’s Claude and Google’s Gemini, let alone China’s DeepSeek.—
The Week UK,
TheWeek,
1 Apr. 2026 -
Although expanding, solar and wind power have not yet been enough to halt, let alone reverse, increasing emissions.—
Georgina Jedikovska,
Interesting Engineering,
31 Mar. 2026
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“Still less.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/still%20less. Accessed 6 Apr. 2026.
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