amass

1 of 2

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

amassment

2 of 2

noun

amass·​ment ə-ˈma-smənt 

plural -s

: the act or result of amassing : accumulation

Synonyms of amass

Verb

• collect
• gather
• assemble
• accumulate
• garner

Examples of amass in a Sentence

Verb

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

Verb

Parsi photographer and filmmaker Sooni Taraporevala has spent years amassing what may be one of the community’s most intimate archives of everyday life, shaped by her access to the spaces that outsiders rarely see. — Rhea Mogul, CNN Money, 21 June 2026

The uninitiated might be surprised that Game Changer has amassed a fiercely loyal, very active online fan base. — Simon Thompson, HollywoodReporter, 21 June 2026

Supporters embraced the term as a symbol of resilience, helping the group amass more than 22 million followers on Instagram. — ABC News, 20 June 2026

Talarico’s billionaire backers amassed their wealth mainly in tech or finance. — Andrew Balaban, Forbes.com, 20 June 2026

Word History

Etymology

Verb

Anglo-French amasser, from a- (from Latin ad-) + masser to gather into a mass, from masse mass

First Known Use

Verb

15th century, in the meaning defined at transitive sense 1

Noun

1665, in the meaning defined above

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