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 Red Sox have amassed a huge amount of starting pitching depth heading into 2026, but that depth is already being tested less than a week into the season. —Mac Cerullo, Boston Herald, 3 Apr. 2026

After amassing 105 points, the sixth-best point total in the NHL last year that tied a single-season franchise record, the Kings are seeking to avert a similar fall from grace. —Andrew Knoll, Daily News, 3 Apr. 2026

As the ultrawealthy fund political campaigns and amass influence, the billionaire class has been under fire. —Jessica Mathews, Fortune, 3 Apr. 2026

Along the way, the two have amassed an impressive array of credits. —George Varga, San Diego Union-Tribune, 3 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