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

That said, a seven-figure net worth amassed over time comes with a set of financial benefits and complexities that can easily turn into missteps—like a surprise tax bill or family fallout after an inheritance. —Joanna Rotenberg, Fortune, 20 Feb. 2026

Sabrina has amassed hundreds of community service and volunteer hours. —Andy Humbles, Nashville Tennessean, 20 Feb. 2026

The Spirit Tunnel has become a bona fide cultural phenomenon, amassing more than 6 billion views across platforms and cementing itself as one of daytime television’s most infectious traditions. —Kennedy French, Variety, 19 Feb. 2026

Across more than five decades, Pantoliano amassed an extensive catalog of roles in classic American film and television series, which have solidified his status as a prolific Hollywood performer. —Rosy Cordero, Deadline, 19 Feb. 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