\ 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 Epic’s war chest, amassed in part thanks to Fortnite’s global success, allows the publisher to set competitive revenue sharing rates and buy exclusive rights to sell certain titles. Washington Post, "The Epic Games Store infuriated people. Gamers spent $680 million there anyway.," 14 Jan. 2020 Rutter holds the record for overall winnings, $4.7 million, amassed over years of winning these all-star tournaments. Julia Jacobs, New York Times, "Greatest of All Time on ‘Jeopardy!’: Who Won Game 1?," 7 Jan. 2020 The 22-year old has become one of the most influential celebrities, amassing more than 270 million followers on social media. Megan Cerullo, CBS News, "Kylie Jenner sells majority stake in her beauty company for $600 million," 18 Nov. 2019 A year later, another arsenal exploded just to the southwest of Baharka, reportedly destroying millions of dollars’ worth of ammunition amassed during the fight against ISIS. Peter Schwartzstein, Scientific American, "Climate Change May Be Blowing Up Arms Depots," 14 Nov. 2019 Aldridge’s 39 points, amassed on uber-efficient 19-of-23 shooting, helped the seven-time All-Star break out of an early-season offensive slump. Jeff Mcdonald,, "Spurs’ Aldridge takes aim at another favorite foil," 8 Nov. 2019 The room has a leather ceiling and brass accents, and an antique flask collection amassed from Chinese flea markets. Jenna Scatena, Condé Nast Traveler, "Drinking in Abu Dhabi: A Definitive Guide," 5 Nov. 2019 Other standout performers included Tim Krul, whose two penalty saves resulted in him earning 16 points, and Ben Chilwell – who bagged a goal and two assists in the Foxes' 9-0 demolition of Southampton, amassing him a grand total of 19 points., "Premier League Fantasy Football: Who's Hot and Who's Not in Gameweek 11," 1 Nov. 2019 In 2016, another IRS worker in Atlanta admitted to improperly accessing the personal information of two taxpayers, amassing close to half a million dollars from illicit tax refunds. Justin Rohrlich, Quartz, "An IRS employee stole identities and went on a 2-year spending spree," 10 Oct. 2019

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

20 Jan 2020

Cite this Entry

“Amass.” The Dictionary, Merriam-Webster Inc., Accessed 20 January 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

Comments on amass

What made you want to look up amass? Please tell us where you read or heard it (including the quote, if possible).


not to be intimidated or subdued

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