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 two have shared videos about their relationship on social media that have amassed millions of views, although some of that footage appears to have since been removed. — Alexis Mikulski Ruiz, Rolling Stone, 12 Nov. 2026

The animal later became a viral social media sensation, amassing a large following online. — Bonny Chu, FOXNews.com, 12 Nov. 2026

During his lifetime, Merv Griffin amassed a vast real estate portfolio. — Wendy Bowman, Robb Report, 12 Nov. 2026

The GoFundMe, which had amassed nearly $22,900 as of Tuesday night, will help Delgado’s family with funeral arrangements, according to the page. — Tess Kenny, Chicago Tribune, 11 Nov. 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
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass
• landmass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun