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 Emblems brand is already growing quickly, and Bailly’s goal is to amass up to 60 properties worldwide by 2035. —Nicole Trilivas, Travel + Leisure, 22 Nov. 2025

Since Vegas’s adoption journey went viral, the TikTok post has amassed over 100 comments already. —Alyce Collins, MSNBC Newsweek, 21 Nov. 2025

Artnet News reported that the seller was Selma Ertegun, who with her late husband, record producer Nesuhi Ertegun, had amassed a collection of Surrealist works. —News Desk, Artforum, 21 Nov. 2025

Don’t count the actors out of the race, especially after all the goodwill the first film amassed, but reviewers have not been uniformly kind to what will obviously be a box-office sensation of a musical. —Ryan Lattanzio, IndieWire, 21 Nov. 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