amass

verb

ə-ˈmas 

amassed; amassing; amasses

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.

amasser noun

amassment

ə-ˈmas-mənt 

noun

Synonyms

• collect
• gather
• assemble
• accumulate
• garner

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

But the clip quickly went viral, amassing over 6.5 million views and thousands of comments. —Jordan Greene, People.com, 15 July 2025

Nielsen figures for January to June show the series has amassed 25.06 billion minutes of viewing this year — which puts it on a similar pace to last year’s total of 55.62 billion minutes. —Rick Porter, HollywoodReporter, 14 July 2025

Kimmel’s tribute to Otto has amassed 255,000 views and nearly 9,000 reactions and comments on Facebook as of July 14. —Mark Price updated July 14, Miami Herald, 14 July 2025

Since leaving Texas on June 10 to begin their journey, the couple has amassed $4.9 million in donations, coming from new followers and other donations, including famous YouTubers like Mr. Beast, Dhar Mann, Doctor Mike and more. —Sarah Moore, Freep.com, 14 July 2025

Word History

Etymology

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

First Known Use

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

Rhymes for amass

• alas
• bromegrass
• bypass
• chagas
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun