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

Released in 2005, the song, written by Malerman, has amassed more than 17 million streams on Spotify. — Brenna Ehrlich, Rolling Stone, 28 Oct. 2026

Eisenkot could form a majority coalition In Israeli politics, where higher vote counts don’t automatically translate into political victories, the ability to amass a coalition is key. — Julia Frankel, Los Angeles Times, 28 Oct. 2026

Variety has amassed 62 nominations for the Los Angeles Press Club’s 19th annual National Arts & Entertainment Journalism Awards, including nods for Print Journalist of the Year for Chris Willman and Online Journalist of the Year for Ethan Shanfeld. — Isabelle Farina, Variety, 28 Oct. 2026

Over five years, Wex amassed thousands of images of such postures, drawing from her street photography as well as magazines, ads and art history books. — Rebecca L. Davis, New York Times, 28 Oct. 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