the rot sets in
idiom
chiefly British
—used to say that things start to get really bad
The rot set in when the factory closed down.
Cite this Entry
“The rot sets in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/the%20rot%20sets%20in. Accessed 3 Mar. 2025.
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Merriam-Webster unabridged
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