What does "build up" mean?

To gradually increase or develop To accumulate or strengthen over time.

How do you use "build up" in a sentence?

She built up her confidence. Traffic builds up during rush hour. He built up a successful business.

Phrasal Verb BritishAmericanAustralian ★★★★★ Very Common Neutral

Meaning: To gradually increase or develop

积累，逐渐增加

Acumular, desarrollar gradualmente

蓄積する、徐々に増やす

축적하다, 점차 늘리다

To accumulate or strengthen over time.

随着时间的推移积累或加强。

Acumular o fortalecer con el tiempo.

時間をかけて蓄積または強化すること。

시간이 지나면서 쌓이거나 강화되다.

Base verb: build

Particle: up

Separable: Yes — the object can go between the verb and particle

She built up her confidence.
她建立了自信
Ella fue ganando confianza
彼女は自信をつけた
그녀는 자신감을 키웠다.
Traffic builds up during rush hour.
高峰时段交通拥堵加剧
El tráfico se acumula en hora punta
ラッシュアワーには渋滞が発生する
출퇴근 시간에는 교통 체증이 심해진다.
He built up a successful business.
他建立了一个成功的企业
Él construyó un negocio exitoso
彼は成功したビジネスを築き上げた
그는 성공적인 사업을 구축했다.

Context: development, accumulation

Tone: progressive

From building layer by layer.

Era: Modern

Generation: All ages

Social background: Universal