To make something, such as the sound, heat, or light, stronger or louder by adjusting a control.
Can you turn up the radio? I can’t hear the song.
A: It’s freezing in here. B: I’ll turn up the heating.
When I study, I usually turn up the volume on my headphones to block out background noise.
Common mistake
✗Turn up it, I love this song.
✓Turn it up, I love this song.
With a pronoun, the object goes in the middle: 'turn it up'.
Tell it apart
Turn the heating up.
increase it
He turned up late.
arrived — sense
Use 'turn up' for things you can adjust, like music, TV, or heating.'Turn up' is the opposite of 'turn down', which means to make something quieter or less strong.
To appear or be discovered, especially after being lost or missing, often by chance and unexpectedly.
Don’t worry about your passport—it’ll probably turn up sooner or later.
A: I can’t find my glasses anywhere. B: They’ll turn up when you least expect it.
Sometimes, important documents that go missing during a move eventually turn up in the most unlikely places.
Common mistake
✗My keys turned up themselves.
✓My keys turned up.
It's intransitive here — don't add 'themselves'.
Tell it apart
The cat turned up next door.
was found unexpectedly
The guest turned up next door.
arrived — sense
'Turn up' in this sense is used when something or someone that was lost or missing is found unexpectedly. It is neutral and common in both spoken and written English.Unlike the B1 sense 'arrive unexpectedly' (which refers to a person going somewhere), this sense is about something or someone being discovered after being lost, not about arriving at a place.