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

• 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

Over 400 Amazon shoppers bought this crossbody purse in the past month alone, and it’s amassed thousands of five-star ratings. —Jamie Allison Sanders, People.com, 8 Aug. 2025

The 35-year-old spent 17 years with the German side, amassing 250 goals and 238 assists, and helping the club secure a record 33 titles. —Wayne Sterling, CNN Money, 6 Aug. 2025

The 73-year-old has amassed a significant following on the platform from users that transcend his generation or even his time zone in part because his account feels not unlike any other page on the internet. —Fran Hoepfner, Vulture, 5 Aug. 2025

The post amassed over 5,700 likes and more than 4,100 comments since it was shared on July 16. —Soo Kim, MSNBC Newsweek, 5 Aug. 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