buildup

1 of 2

noun

build·​up ˈbild-ˌəp 

1

: something produced by building up

fluid buildup in the lungs

2

: the act or process of building up

build up

2 of 2

verb

built up; building up; builds up

transitive verb

1

: to develop gradually by increments

building up endurance

built up a library

2

: to promote the health, strength, esteem, or reputation of

intransitive verb

: to accumulate or develop appreciably

builder-upper

ˈbil-dər-ˈə-pər 

noun

Synonyms of buildup

Verb

• increase
• rise
• accelerate
• swell
• expand
• climb
• roll up

Examples of buildup in a Sentence

Noun

There is a big traffic buildup on the highway.

You should clean the mechanism regularly to prevent buildup of dirt.

Both players were given big buildups before the game.

Verb

static electricity built up on the cat's fur

the roller coaster built up momentum

Recent Examples on the Web

Noun

Many questions Bukele has billed the rapid buildup as a search-and-rescue operation to find the missing Salvadorans, who were attacked east of Port-au-Prince while returning to camp after a trip to the supermarket. — Jacqueline Charles, Miami Herald, 30 Oct. 2026

Japan has been accelerating military buildup in southwestern Japan to deter China. — Jim Gomez, Arkansas Online, 30 Oct. 2026

Verb

Another pot is the National Wealth Fund, a reserve built up from oil and gas export earnings. — David McHugh, Los Angeles Times, 29 Oct. 2026

In short, as heat builds up in the eastern Pacific Ocean, surges of warm water are pushed up the coast — raising sea levels and further warming coastal temperatures. — Sean MacAday, Sacbee.com, 29 Oct. 2026

Word History

First Known Use

Noun

1926, in the meaning defined at sense 1

Verb

1555, in the meaning defined at transitive sense 1

Rhymes for buildup

• backup
• blowup
• breakup
• checkup
• cleanup
• holdup
• hookup
• lineup
• lockup
• makeup
• markup
• pickup

Kids Definition

buildup

noun

build·​up ˈbil-ˌdəp 

1

: something produced by building up

2

: the act or process of building up