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

For most people, the quickest way to amass a large rewards balance is to earn a welcome bonus from a new credit card. — Jason Stauffer, CNBC, 24 Sep. 2026

Irsay, who died last year, had spent decades amassing a collection that ranged from presidential documents and Jack Kerouac’s original typescript for On the Road to some of the most famous guitars in rock history. — Daniel Cassady, ARTnews.com, 23 Sep. 2026

The winger’s two goals and near-third played a massive role in the 3-0 lead Sporting amassed just 15 minutes into its last match. — Daniel Sperry, Kansas City Star, 23 Sep. 2026

Whitley amassed a 52-16 record and won two region titles at Creekside before taking over at Stockbridge. — Jack Leo, AJC.com, 22 Sep. 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