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had been festering

  • past perfect progressive
    of fester.
    fester
    verb (used without object)
    to form pus; generate purulent matter; suppurate.

Example Sentences

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Issues between Adams and the Raiders had been festering since last season when he said on a Netflix documentary that quarterback Jimmy Garoppolo was going to get him killed.

From Los Angeles Times ● Oct. 15, 2024

Angst over overtourism had been festering before the pandemic, and the confluence of the coronavirus and tourists created a flash point.

From Seattle Times ● Sep. 17, 2021

Cultural clashes based on generation, race, gender, politics, and ideology, all of which had been festering for years, would dramatically alter the national climate by decade’s end.

From Slate ● May 26, 2017

“It’s like a blister, it just popped. It had been festering and festering and festering,” John Morgan, a Florida-based Clinton donor, said of Wasserman Schultz’s rocky tenure, which he has long criticized.

From Washington Post ● Jul. 25, 2016

As I soon found out, anger at me had been festering in him ever since yesterday, and Aunt Loma’s fit brought it to a head.

From "Cold Sassy Tree" by Olive Ann Burns