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

Throughout the building process, Elise documented the process on TikTok and Instagram, where many of her videos went viral, amassing millions of views. —Jordan Greene, People.com, 3 Jan. 2025

Over the years, Steph Yang and I have amassed our own collections of women’s soccer odds and ends, both as fans and as journalists. —Meg Linehan and Steph Yang, The Athletic, 2 Jan. 2025

Washington — In the four years since the Capitol attack on Jan. 6, 2021, federal investigators have amassed troves of evidence leading to the arrests of more than 1,500 defendants. —Scott MacFarlane, CBS News, 2 Jan. 2025

At the time of publication, Markle has amassed nearly 670,000 followers. —Jake Kanter, Deadline, 2 Jan. 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

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun