\ ə-ˈmas \
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 \ -​mənt \ 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

The key ruling cemented Maduro’s power, preventing the opposition from amassing a two-third super majority that would have severely curtailed Maduro’s power. Scott Smith, The Seattle Times, "Venezuela Supreme Court judge flees to US to protest Maduro," 7 Jan. 2019 Just a few decades after the altar was carved, Kaanul apparently defeated Tikal by amassing a string of allied cities that encircled and eventually strangled Tikal. Fox News, "Experts: Mayan altar hints at ancient intrigue," 14 Sep. 2018 Williams finished his career in Fort Worth by amassing 1,125 points, which ranks 21st all-time in school history, and 877 rebounds, which ranks fourth. William Wilkerson, star-telegram, "This TCU player has been invited to NBA Draft Combine | Fort Worth Star-Telegram," 7 May 2018 After amassing his fortune, Carnegie turned his focus to philanthropy. Lauren Walser, USA TODAY, "Great American libraries: Towns treasure Carnegie gifts," 10 Apr. 2018 After amassing 12 runs, Tolleson was able to take the foot off the gas. Aaron Nicholson, azcentral, "Tolleson baseball rolls past Westview, wins second in a row," 30 Mar. 2018 What's more, Walter has already amassed 16,000 Youtube subscribers, so, clearly, Whoopi isn't the only one obsessed. Kayla Keegan, Good Housekeeping, "'The View' Star Whoopi Goldberg Lost It on Wednesday's Episode After Watching a Viral Video," 25 Oct. 2018 Rather than becoming wealthy upon marrying into the royal family in 2011, Kate had already amassed her fortune, mainly thanks to her family's lucrative business, Party Pieces. Amy Mackelden, Harper's BAZAAR, "Meghan Markle and Prince Harry's Net Worth Compared to Kate Middleton and Prince William's," 23 Sep. 2018 Nisenbaum said the company has already amassed more than 10 million kilometers (6 million miles) of road data. Timothy B. Lee, Ars Technica, "This startup helps self-driving cars literally feel the road," 11 Sep. 2018

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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Statistics for amass

Last Updated

17 Feb 2019

Look-up Popularity

Time Traveler for amass

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

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More Definitions for amass



English Language Learners Definition of amass

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


\ ə-ˈmas \
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

Rhyming Dictionary: Words that rhyme with amass

Thesaurus: All synonyms and antonyms for 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).


very full or close together

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