What does "brighten up" mean?

To become happier; to make more cheerful When mood or weather improves.

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

She brightened up when she saw him. The flowers brighten up the room. The weather should brighten up later.

Phrasal Verb BritishAmericanAustralian ★★★★☆ Common Neutral

Meaning: To become happier; to make more cheerful

变开朗、变明亮

Animarse; alegrar

明るくなる、元気づける

밝아지다, 기운을 되찾다

When mood or weather improves.

心情或天气变好。

Cuando mejora el ánimo o el tiempo.

気分や天気が良くなること。

기분이나 날씨가 나아지는 것.

Base verb: brighten

Particle: up

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

She brightened up when she saw him.
她看到他就高兴起来了
Se animó cuando le vio
彼を見て彼女は明るくなった
그를 보자 그녀의 표정이 밝아졌다
The flowers brighten up the room.
花让房间亮了起来
Las flores alegran la habitación
花が部屋を明るくしている
꽃이 방을 환하게 해 준다
The weather should brighten up later.
天气应该会放晴的
El tiempo debería mejorar más tarde
あとで天気は晴れるはずだ
나중에 날씨가 개일 거야

Context: mood, improvement

Tone: positive

From becoming brighter.

Era: Modern

Generation: All ages

Social background: Universal