no flies on

idiom

chiefly British, informal
used to describe someone as quick to understand things and not easily fooled
That chap is brilliant—there are no flies on him.

Examples of no flies on in a Sentence

Recent Examples on the Web
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Drive-thru coffee chain Dutch Bros reported a great quarter last night with no flies on it. Jim Cramer, CNBC, 7 Aug. 2025

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Cite this Entry

“No flies on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/no%20flies%20on. Accessed 10 Sep. 2025.

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