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have been simmering

  • present perfect progressive
    of simmer.
    simmer
    verb (used without object)
    to cook or cook in a liquid at or just below the boiling point.

Example Sentences

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Concerns over private credit have been simmering in the latter part of 2025, following the collapses of U.S. auto-parts supplier First Brands and car dealership Tricolor.

From MarketWatch Nov. 17, 2025

North Korea has accused South Korea of flying drones into its capital, ratcheting up tensions that have been simmering for months.

From BBC Oct. 15, 2024

Behind the scenes, the argument aggravates differences that have been simmering for years, some industry sources said.

From Reuters Jul. 30, 2021

Tensions on the border have been simmering since May, when Armenia protested what it described as an incursion by Azerbaijani troops into its territory.

From Seattle Times Jul. 28, 2021

This knowledge must have been simmering under the surface of my thoughts.

From "Saints and Misfits" by S.K. Ali