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

Her account, @dramafreediaries on TikTok and Instagram, has amassed 100 million views and 500,000 followers across several social media platforms since her first post in January. — Amen Galinato, CNN Money, 23 Aug. 2026

In 2023, Gupta set a Guinness World Record for the largest collection of factices, amassing more than 3,000 in his collection ranging in value from $2,000 to $100,000. — Noor Lobad, Footwear News, 21 Aug. 2026

The Oscar winner joined Instagram in April and has since amassed 6 million followers. — Zack Sharf, Variety, 21 Aug. 2026

Summary Wonder Works Studio, facing financial ruin, found salvation with its Roblox hit, *SpongeBob Tower Defense*, amassing over 600 million visits. — Ian Shepherd, Forbes.com, 21 Aug. 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