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 timing is especially odd for Horvath, who has been steadily amassing endorsements and donations for her reelection bid representing a supervisorial district covering the Westside and San Fernando Valley. —David Zahniser, Los Angeles Times, 6 Feb. 2026

Across its two seasons so far, the series has amassed 9 Emmy wins and 40 nominations. —Lauren Huff, Entertainment Weekly, 6 Feb. 2026

In exchange, the Bulls amassed a heap of second-round picks and a rag-tag group of mostly young players who might or might not return to the roster next season. —Julia Poe, Chicago Tribune, 6 Feb. 2026

Over the past six years, @LilasClayground has amassed over 18,000 followers on Instagram. —Noelle Alviz-Gransee february 6, Kansas City Star, 6 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