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

Over the next 15 years, Alito amassed a conservative record. —Peter S. Canellos, The Atlantic, 10 Apr. 2026

The Big Ten Conference amassed nearly $70 million from NCAA distributions that will be paid for team appearances and performances in the 2026 men’s and women’s basketball tournaments. —Eric Olson, Chicago Tribune, 9 Apr. 2026

Tepper amassed his wealth as the founder of Appaloosa Management, later adding the Carolina Panthers and Charlotte FC to his business portfolio. —Tanasia Kenney, Charlotte Observer, 9 Apr. 2026

Jokic amassed 14 points, 15 rebounds and 10 assists by the end of the third quarter Wednesday. —Bennett Durando, Denver Post, 9 Apr. 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
• chagas
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun