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

Speakers noted the Republican nominee's oil and gas investments as the energy sector amasses profits while the Iran war drives up fuel costs. — Arkansas Online, 17 Sep. 2026

An elegant attacking batter, Ganguly scored 16 test and 22 one-day international centuries, amassing more than 18,000 runs across both formats. — ABC News, 17 Sep. 2026

Spiro’s music has amassed over 1 billion global streams to date. — Paul Grein, Billboard, 17 Sep. 2026

Created by Violet Matter and illustrated by sh00, Roususu and Drawniels, The Mafia Nanny webcomic has amassed 420 million global views. — Nellie Andreeva, Deadline, 17 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