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have been amassing

  • present perfect progressive
    of amass.
    amass
    verb (used with object)
    to gather for oneself; collect as one's own.

Example Sentences

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More than a decade ago, Congress’s investigative arm warned that some insiders might have been amassing more in IRAs than the contribution limits allowed by using artificially low share prices to value startup holdings.

From The Wall Street Journal Jul. 22, 2026

Players, though, have been amassing what Scherzer, a top union representative, once called a “pretty good war chest” to help weather a work stoppage.

From New York Times Mar. 2, 2022

For months, thousands of men, women and children have been amassing at Belarus's western borders.

From BBC Nov. 17, 2021

Massoud, in his op-ed, said that his fighters have been amassing arms and ammunition in recent years in anticipation of a Taliban return and that soldiers have also been arriving with their own weapons.

From Washington Post Aug. 23, 2021

We seemed to have been amassing enemies at a furious pace.

From Greenmantle by John Buchan