\ ə-ˈmas How to pronounce amass (audio) \
amassed; amassing; amasses

Definition of amass

transitive verb

1 : to collect for oneself : accumulate amass a great fortune
2 : to collect into a mass : gather must select rather than simply amass details

intransitive verb

: to come together : assemble Dark clouds amassed over the city.

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Other Words from amass

amasser noun
amassment \ ə-​ˈmas-​mənt How to pronounce amassment (audio) \ noun

Examples of amass in a Sentence

They've amassed a wealth of information. amassed a truckload of donations in the course of their canned food drive
Recent Examples on the Web Including team and individual titles, the school amassed 141 state championships with Donhoff in charge. Rana L. Cash, The Courier-Journal, "St. Xavier athletic director Alan Donhoff retires after 25 years at the helm," 27 Mar. 2020 The 19 screens and buffers that keep problematic material out of his district’s 200 miles of sewer lines, which workers periodically clean out, have been amassing more debris than usual lately. Kurtis Alexander,, "Toilet-paper shortages caused by coronavirus blamed for spike in raw sewage spills," 19 Mar. 2020 Xifeng Wu, an epidemiological researcher, worked at MD Anderson for nearly three decades and amassed an enormous dataset to help cancer researchers understand patient histories. David Armstrong, ProPublica, "The Trump Administration Drove Him Back to China, Where He Invented a Fast Coronavirus Test," 18 Mar. 2020 City attorneys alleged numerous storm-water and solid-waste violations caused by the shingles amassed along a small creek that runs behind nearby residences. Robert Wilonsky, Dallas News, "Clean-up at southeast Dallas’ Shingle Mountain begins, finally, just as Texas steps into City Hall’s fight," 12 Mar. 2020 Joe Biden looks like the inevitable Democratic presidential nominee after blowout victories in the last two primary contests and amassing a delegate lead. Emily Larsen, Washington Examiner, "Biden treads carefully pushing out defiant Sanders without alienating him and supporters," 11 Mar. 2020 Since that show, Ganni has expanded globally, amassed 717k followers on Instagram, and grown a massive fan-base of #GanniGirls located around the world. Eliza Huber,, "Ganni’s Spring Collection Is Here, & We Want All Of It," 6 Mar. 2020 The school had nearly maxed out its credit line, defaulted on bond terms and amassed tens of millions of dollars in loans and business debts. oregonlive, "Concordia University’s online vision hid grim reality," 28 Feb. 2020 Gascón announced his candidacy in October and has amassed $341,000 in direct funding. Los Angeles Times, "For the Record," 25 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of amass

15th century, in the meaning defined at transitive sense 1

History and Etymology for amass

Anglo-French amasser, from a- (from Latin ad-) + masser to gather into a mass, from masse mass

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Time Traveler for amass

Time Traveler

The first known use of amass was in the 15th century

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Statistics for amass

Last Updated

30 Mar 2020

Cite this Entry

“Amass.” Dictionary, Merriam-Webster, Accessed 31 Mar. 2020.

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More Definitions for amass


How to pronounce amass (audio)

English Language Learners Definition of amass

: to gather or collect (something, such as a large amount of money) especially for yourself


\ ə-ˈmas How to pronounce amass (audio) \
amassed; amassing

Kids Definition of amass

: to collect or gather together The businessman was able to amass a fortune.

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More from Merriam-Webster on amass

Thesaurus: All synonyms and antonyms for amass

Rhyming Dictionary: Words that rhyme with amass

Spanish Central: Translation of amass

Nglish: Translation of amass for Spanish Speakers

Britannica English: Translation of amass for Arabic Speakers

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