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

The festival worker who had taken the picture handed me back my phone and ushered me into the long line of fans amassed at the entrance to the theatre. — Becca Rothfeld, New Yorker, 29 Aug. 2026

Over the course of her famously eventful love life, Taylor accepted 10 proposals, married eight times, and amassed a trove of diamonds and precious stones that became nearly as storied as the woman wearing them. — Bailey Bujnosek, InStyle, 28 Aug. 2026

But at least 32,000 people have amassed more than $10 million in workplace and individual retirement accounts like a Roth IRA, which can grow without taxes due on the earnings, according to the Joint Committee on Taxation. — The Week Us, TheWeek, 27 Aug. 2026

Born April 19, 1946, Curry amassed hundreds of credits across film, television and theater throughout a career spanning more than five decades. — Nicole Acevedo, NBC news, 26 Aug. 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