Translation guide
The English verb 'brighten' can mean to become brighter in light, to become more cheerful, or to make something brighter or more cheerful. This guide covers natural Japanese expressions for these meanings.
The sky brightened.
Her face brightened.
To describe a place, sky, or room becoming lighter or more illuminated.
The most common and neutral way to say something becomes brighter in terms of light. It is an intransitive verb phrase.
The sky is brightening up.
The room suddenly brightened.
Specifically used when the weather clears up and the sky becomes brighter. Often used for the sky or weather.
Emphasizes a sudden or vivid brightening, often used for a room or expression.
The room brightened instantly when I turned on the light.
To describe a person's face, mood, or atmosphere becoming happier or more lively.
The same phrase as for light, but used metaphorically for mood or expression. Very common.
To cause something to become brighter in light or color, such as a room, screen, or paint.
Transitive version of 明るくなる. Used for making a place or light brighter.
To cause a person or atmosphere to become more cheerful or lively.
Transitive version for mood or atmosphere. Can be used for a person's spirits or a party.
明るくなる is a general term for becoming bright (light or mood). 晴れる is specifically for the weather clearing up and becoming sunny. Use 晴れる only for sky/weather.
The weather brightened (cleared up).
English 'brighten' is a verb, but Japanese 明るい is an adjective. You must use 明るくなる (become bright) or 明るくする (make bright). Saying 明るいする is incorrect.
The room brightened when she entered.
午後には晴れるでしょう。
It will brighten up in the afternoon.
Her face brightened.
His expression brightened when he heard the news.
Means to become cheerful or energetic, often after feeling down. Focuses on recovery of spirits.
I brightened up after talking with a friend.
Literally 'expression suddenly shines', used for a face lighting up with joy. More vivid and literary.
Her face brightened when she saw the present.
Please brighten the lighting.
We brightened the room by painting the walls white.
Means to make something shine or glow. Often used for making eyes or a surface brighter.
Her smile brightened the room.
Specifically for making colors more vivid or bright. Used for images, designs, etc.
Brighten the colors of the photo.
His joke brightened the mood.
The music brightened the party.
Means to cheer someone up or lift their spirits. Focuses on emotional encouragement.
I bought flowers to brighten my friend's day.
To enliven or invigorate an atmosphere or group. More about adding energy.
The new member brightened up the team.
笑顔で彼の顔が明るくなった。
A smile brightened his face.
Could you brighten the screen?