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has been fermenting
  • present perfect progressive of ferment (3rd person singular).

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.

Tonight, Snyder is thrilled that an eighth-grader named Rainy Matyas, accompanied by her mother, has brought in a kombucha sample that has been fermenting for weeks.

From Seattle Times • Jul. 5, 2023

His winery has been fermenting small samples to gauge whether smoke affects the resulting wine.

From Washington Times • Sep. 24, 2020

Some people prefer their kraut crunchy and light, while others enjoy a softer, more sour kraut that has been fermenting longer.

From Washington Post • Jan. 7, 2020

Natural wine has been fermenting in France since the 1970s, but recently such epiphanies have turned it into a phenomenon.

From The Guardian • Nov. 14, 2017

Ah, Nikolay Vsyevolodovitch, so much has been fermenting in this heart that I have not known how to wait for your coming.

From The Possessed (The Devils) by Dostoyevsky, Fyodor