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

Starting freshman tight end Mark Bowman was also listed as questionable on the report after catching six passes for 44 yards against Oregon and amassing the second-most receptions on the team overall with 21. — Sean Campbell, Los Angeles Times, 1 Oct. 2026

In addition to their share in Walmart, the family has continued to amass their fortune through the acquisition of sports teams. — Alex Gurley, PEOPLE, 30 Sep. 2026

The paintings come from a collection amassed by the late Argentine art collector Nelly Arrieta de Blaquier and her sugar magnate husband, Carlos Pedro Blaquier, and are being sold by their children. — ABC News, 30 Sep. 2026

Eagles running back Saquon Barkley has amassed 64 credits care of his DirecTV and Nationwide commitments. — Anthony Crupi, Sportico.com, 30 Sep. 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