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

Drafted as a running back, Hawthorne served mainly as a backup, amassing 527 career rushing yards and seven touchdowns. — Jim Barnes july 11, Fort Worth Star-Telegram, 12 July 2026

His seven Star Wars videos have attracted uniform praise across thousands of comments and amassed 2 million views. — Caroline Reid, Forbes.com, 10 July 2026

Brattin amassed $113,972 as of March 31, having secured more from donors than anyone else in the field. — Jack Harvel, Kansas City Star, 10 July 2026

Content creator Alexa Santos, known on for her viral recipes as @alexawhatsfordinner, tried her hand at the frozen watermelon dessert, sharing a video of her step-by-step guide that has since amassed more than 32,000 likes. — Kelly McCarthy, ABC News, 10 July 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