lock up

phrasal verb·1 sense·particle up

Usefulness

Meanings

1

Secure by locking everything

Finishinguncommon

Why “up”? Filling to the top. Reaching the upper limit means finishing.

Leo locked up the flat before he left for work.
Leo secured every door in the flat before work.
The guard locked up the school after the concert.
The guard locked every door at the school after the concert.
Leo locked up the house before the weekend trip to the train station.
Leo secured every door before the weekend trip to the train station.

Don't confuse with

lock uplock out

Lock up means secure by locking everything. Lock out means prevent someone from entering by locking the door.

Test yourself

Leo locked up the flat before he left for work. What does it mean?

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