shut off

phrasal verb·1 sense·particle off

Meanings

1

Stop operating completely

Why “off”? The connection stops. The machine, light, or device stops working.

Shut the engine off, please.
Please stop the engine completely.
Shut the water off before fixing the pipe.
Stop the water supply completely before fixing the pipe.

Don't confuse with

shut offshut in

Shut off means stop operating completely. Shut in means enclose by closing a door.

Test yourself

Shut the engine off, please. What does it mean?

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