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

During the boom, many developers amassed huge debts, and the oversupply of housing led to whole ghost districts and empty projects in many places. —Chris Lau, CNN Money, 18 May 2026

Cindy Noir is a content creator who has amassed more than a million followers across her social media platforms over the last decade. —Janice Gassam Asare, Forbes.com, 16 May 2026

Barker, 26, has spent the past few years amassing an avid fan base on YouTube with his sketch comedy channel, That’s a Bad Idea. —Pamela McClintock, HollywoodReporter, 16 May 2026

Saab, 54, amassed a fortune through Venezuelan government contracts. —ABC News, 16 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