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 of amass

• 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

The response amassed more than 24 million views. —CBS News, 24 May 2026

In the years since the crash, Graham has continued pursuing her content creator career and has amassed more than 2 million followers across YouTube, TikTok and Instagram. —Caroline Blair, PEOPLE, 23 May 2026

As his cruise marketing business boomed, Levine amassed more than $100 million in real estate investments, much of it in Miami in partnership with Robins’ brother, Scott. —Aaron Leibowitz, Miami Herald, 23 May 2026

While former Imperial warlords drift about, trying to amass power, the New Republic sends out the Mandalorian to haul them back to headquarters to snitch on their comrades. —Katie Walsh, Twin Cities, 23 May 2026

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
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass
• landmass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun