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

His channel amassed more than 65,000 subscribers and nearly 8 million views across more than 1,000 videos. —Deirdre Durkan, PEOPLE, 31 May 2026

The story, which drew from an internet meme across Reddit and 4chan, amassed tens of millions of views in weeks and the series has since accumulated more than 220 million views as of Sunday. —Ty Roush, Forbes.com, 31 May 2026

Charles was a mainstay under now-United States Women’s National Team head coach Emma Hayes and flourished in the 2023-2024 season, starting every league game, amassing 1,890 minutes, and recording the most goal-creating actions in the league. —Megan Feringa, New York Times, 31 May 2026

By the end of its five-year primary mission, Roman is expected to amass a 20,000-terabyte data archive. —Richard Tribou, The Orlando Sentinel, 30 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