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have been swelling

  • present perfect progressive
    of swell.
    swell
    verb (used without object)
    to grow in bulk, as by the absorption of moisture or the processes of growth.

Example Sentences

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Individual airlines maintain their own no-fly lists, which have been swelling; Delta’s is approaching 2,000 passengers.

From Washington Post Feb. 8, 2022

The leagues have been swelling in popularity, their advertisements blanketing football game broadcasts.

From New York Times Oct. 5, 2015

Though Asians still number only around 3.6 million, or 1.6% of the total U.S. population, their ranks have been swelling at an unprecedented rate since the reform of immigration laws in 1965.

From Time Magazine Archive

With the economy in the doldrums and companies slashing payrolls, the ranks of the discouraged have been swelling rapidly as many workers abandon their search for jobs as hopeless.

From Time Magazine Archive

My capital is gone, and my debts in the shape of interest have been swelling like the Pegnitz in the spring of the year.

From The Goose Man by Porterfield, Allen Wilson