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

• accumulate
• assemble
• bulk (up)
• collect
• concentrate
• congregate
• constellate
• corral
• garner
• gather
• group
• lump
• pick up
• round up

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

Thanks to his new entry, Royce amasses 36 top 10s on Tropical Airplay, breaking a tie with Jerry Rivera for the fourth-most overall since the ranking launched in 1994. —Pamela Bustios, Billboard, 23 Apr. 2025

Krishnamoorthi, in particular, has amassed a massive war chest of $19.4 million. —Caroline Vakil, The Hill, 23 Apr. 2025

Sophomore attacker Taylor Hoss led all players with four assists and six points, junior attacker Ava Angello amassed two goals and three assists, and senior midfielder Charlotte Smith, a Baltimore resident and Bryn Mawr graduate, compiled one goal and two assists. —Edward Lee, Baltimore Sun, 23 Apr. 2025

At the pinnacle, the top 0.1% command a staggering $62 million, often amassed through entrepreneurship, high-growth investments, or inheritance. —Jack Kelly, Forbes.com, 22 Apr. 2025

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
• chagas
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun