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

Progressive streamer Hasan Piker has amassed millions of followers on social media for his daily live streams, which often last up to eight hours, giving him the unique ability to connect Democratic candidates with his loyal following. — Claire Carter, The Washington Examiner, 7 Aug. 2026

The duo had amassed hundreds of Funko Pop figurines, organizing their personal collection within the rental home. — Sarah Glodek, Fortune, 7 Aug. 2026

After the show ended, Franken amassed more than 50 years of stage and screen credits, enjoying a remarkably steady career. — Sophie Clausen, PEOPLE, 6 Aug. 2026

The street’s ultimate fortunes rest to a significant degree on the slow-baking plans of entrepreneur Moishe Mana, who after more than a decade of amassing some 80 downtown Miami properties now owns much of Flagler Street. — Andres Viglucci, Miami Herald, 6 Aug. 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