turn up

phrasal verb·2 senses·particle up

Meanings

1

Increase the setting on a machine or device

Why “up”? More of something is higher. Quantity, intensity and speed all rise.

Turn up the brightness so we can see the screen.
Increase the screen brightness.
He turned the radio up when his favorite song started.
He made the radio louder.
2

Appear, often unexpectedly

Why “up”? Rising into view. What comes up becomes present and visible.

My keys turned up in the sofa.
My keys unexpectedly appeared down in the sofa cushions.
Her missing passport turned up in a drawer.
Her missing passport unexpectedly appeared in a drawer.

Don't confuse with

turn upturn out

Turn up means make a control level higher. Turn out means happen in a final way.

turn upturn down

Turn up means appear, often unexpectedly. Turn down means reject or refuse an offer or request.

Test yourself

Turn up the brightness so we can see the screen. What does it mean?

Nearby in the meaning map

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Tell it apart

Side-by-side comparisons with the verbs learners most often confuse for “turn up”.

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