Dictionary.com
Thesaurus.com

have been percolating

  • present perfect progressive
    of percolate.
    percolate
    verb (used with object)
    to cause (a liquid) to pass through a porous body; filter.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To be sure, fears that AI might cause a white-collar-job apocalypse have been percolating for years.

From MarketWatch Feb. 14, 2026

While discussions of the singularity have been percolating online for years, recent developments in AI technology and headlines warning of a potential AI apocalypse have elevated the topic.

From Salon Jun. 15, 2025

Supreme Court, I realized I had the opportunity to really voice some of these thoughts that have been percolating in my head.

From Slate May 14, 2024

Cruise also is testing a robotaxi service in Los Angeles, where protests against it already have been percolating, as well as Phoenix and Austin, Texas.

From Seattle Times Oct. 24, 2023

Cade: The technologies driving the new wave of chatbots have been percolating for years.

From New York Times Mar. 27, 2023