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

During his 48-year coaching career, McKinley amassed 1,043 wins, became the winningest NJCAA Division I basketball coach in the nation, and earned induction into the NJCAA Women's Basketball Coaches Hall of Fame. —Doug Myers, CBS News, 6 Mar. 2026

While there hasn’t been much research on PATM thus far, cases have been reported in a number of countries, and the condition is slowly but surely amassing recognition within the medical community. —Caroline Tien, SELF, 6 Mar. 2026

The Borealis, launched in 2024, amassed more than 18,000 riders in its first month. —Maia Pandey, jsonline.com, 6 Mar. 2026

Christian Braun played a team-high 40 minutes, amassing 15 points, five rebounds and four assists while bottling up Doncic admirably. —Bennett Durando, Denver Post, 6 Mar. 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
• chagas
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse
• jackass

Kids Definition

amass

verb

ə-ˈmas 

: to collect into a mass : accumulate

amasser noun