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amass

/əˈmæs//əˈmæs/·verb
to gather a large quantity by deliberate effort
Fig. 1 — A cloaked figure tips a sack and gold runs out of it in a bright stream, coin after coin clattering onto a heap that is already too big to step around.
01Definition

To amass is to gather a great quantity on purpose — a fortune, an army, a vast collection, power. Where things accumulate almost on their own and you gather whatever is to hand, to amass is to build up a large amount through deliberate effort, with the emphasis on sheer size. It often carries a tint of ambition or greed: people amass wealth, regimes amass weapons. From the Latin massa, 'a lump', what you amass ends up a substantial, weighty whole.

02In use
  • iOver four decades the family amassed a fortune that their rivals could only watch disperse.
  • iiThe collector had amassed thousands of rare stamps before deciding to collect only the gold ones.
  • iiiGenerals who amass weapons faster than rivals can build up their own gain a dangerous edge.
03Collocations
  • amass a fortune
  • amass wealth
  • amass power
  • amass evidence
  • amass an army

Family amassment (noun)

04Relations

=accumulate, gather, collect, build up, hoard

≠dissipate, disperse, squander

05Compared
PairThe difference
amass vs accumulatethings accumulate by themselves; people amass things on purpose.
amass vs build upa big quantity gathered on purpose → amass; steadily developing or strengthening → build up (amass wealth, build up muscle).
amass vs collectafter sheer quantity → amass; choosing and arranging a set → collect.
amass vs depletea great store built up → amass; a supply drawn down to nothing → deplete.
amass vs dispersea great deal drawn into one place → amass; a mass broken up and spread → disperse.

Also compared with dissipate, garner, gather, pile up

06TOEFL & IELTS

A formal verb for gathering a large quantity by effort, with a frequent note of ambition or greed: 'amass a fortune', 'amass power'. Keep it apart from its near-synonyms — accumulate is more passive and neutral, gather is the general bring-together, while amass stresses deliberate effort and sheer bulk. It collocates with wealth, power, evidence and weapons.

07Asked
What does it mean to amass a fortune?
To build up great wealth deliberately, piece by piece, over time — the verb's home territory. Corpus data suggests amass overwhelmingly takes money-and-information objects: fortunes, wealth, data, evidence, followers. 'By forty she had amassed a fortune' is the sentence dictionaries reach for, and the emphasis is always on the sheer size of the pile.
Is amass a formal word?
Rather formal, as the learner dictionaries label it — you will meet it in journalism and history writing, rarely in conversation, where 'build up' or 'pile up' do the work. That register is exactly its exam value: 'the company amassed significant debts' lifts a sentence a full band above 'got a lot of debts'.
Are 'amass' and 'en masse' related?
They sound like relatives and behave like strangers. Amass is an English verb (via French amasser, from Latin massa, 'lump'): to gather a large quantity. En masse is a borrowed French adverb: 'all together, as one body' ('the staff resigned en masse'). The ear confuses 'amassed' with 'en masse'; the grammar never should.
Can you amass things other than money?
Yes — armies, evidence, power, followers, even clouds. And the verb has a quieter intransitive life the money sense hides: forces gather themselves, as in 'troops amassed at the border'. Whatever the object, the two constants are deliberateness and bulk — small casual collections are gathered, not amassed.
Does amass have a negative connotation?
Only when the object invites one. Amass evidence or data and you sound thorough; amass wealth or power and a shadow of greed creeps in — hoarding beyond need. The scene above leans into that shadow: the cloaked figure pouring gold onto a heap already too big to step around, reaching for one more sack.
What is the difference between amass and accumulate?
The one-line tell: accumulate can happen to you (dust, debts), amass is done by you, at scale and on purpose. That contrast — and this verb's eight other gathering-and-scattering pairings — each have a full side-by-side page with both animated scenes, linked in the 'Compared' list above.