builds; built
ˈbɪlt 
; building
; building
1
: to make (something) by putting together parts or materials
The house is built (out) of brick/logs.
The bridge was built in the 1890s.
The planes were built in Germany.
The organization helps build houses for poor families.
building more powerful machines/computers/weapons
A family of birds has built a nest on our roof.
She started building a fire in the fireplace.
He built a model airplane from a kit.
He built a dollhouse for the children. = He built the children a dollhouse.
You will need permission to build on your property.
2
: to develop or form (something) gradually
I've started building a collection of rare books. [=I've started collecting rare books]
They built the organization from scratch. = They built the organization from the ground/bottom up.
They are building a legal case against the tobacco industry.
scientists building theories about how the universe began
At college, you'll build friendships that will last a lifetime.
She built a successful career in advertising.
He has built a reputation as a talented artist.
building a more peaceful world [=making the world more peaceful]
—often + upBuilding up a successful business can take many years.
She has built up a large collection of awards.
We've been building up a savings account.
3
: to increase the amount of (something)
Lifting weights helps build muscle and increase strength.
These programs are designed to help build confidence in young women.
The advertisements are aimed at building support for political candidates.
They thought the army would build character in their son. [=would make their son become a better person]
—often + upShe runs a little farther every day to build up (her) endurance.
building up momentum/stamina/energy
He's been trying to build up the courage/confidence to talk to her.
These exercises will help you build up your strength.
4
: to grow or increase to a high point, level, number, etc.
The excitement was beginning to build before the game.
A crowd was building around the accident.
The story slowly builds to a climax. [=the story slowly reaches a climax]
Chemicals in the lake are building to dangerous levels.
—often + upAs the water temperature rises, the pressure inside the pot begins to build up.
Their passion/anger/fear/hatred has been building up for years.
plural builds
: the shape and size of a person's body
people with thin/slender/slight builds
He has a strong, muscular build. [=physique]
He is strong and muscular in build.
a man of average build
Cite this Entry
“Build.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/build. Accessed 15 Jun. 2026.
Copy Citation
