Close vs Lock it

When to use each in English, with meaning, register, and examples.

Close

Top 1,000 (very common)A1verb

Lock it

Top 2,000 (common)
Most common: Close
 CloseLock it
Pronunciation🇬🇧 /["/kləʊz/","/ˈkləʊzɪz/","/kləʊzd/","/ˈkləʊzɪŋ/"]/🇺🇸 /["/kləʊz/","/ˈkləʊzɪz/","/kləʊzd/","/ˈkləʊzɪŋ/"]/🇬🇧 //lɒk ɪt//🇺🇸 //lɑk ɪt//
MeaningTo shut something, like a door or a window.To secure something by closing it.
ExamplePlease close the door before you leave.Make sure to lock it before you leave the house.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1-
Part of speechverb
Collocationsfirmly, tightly, gently, firmly, tightly, gently, permanently, temporarily, officially, to, permanently, temporarily, officially, tolock it up, lock it down, lock it securely
Antonymsopen, start-
Common mistakesConfusing 'close' with 'shut' – know when to use which., Using 'close' when referring to people (e.g., 'close the friend') instead of 'end' or 'finish'.Confuse with 'unlock it', which means to open something., Omitting the object, e.g., saying 'lock' without specifying what is locked.
Usage notesUse 'close' when talking about shutting physical objects like doors or books. It can also mean to finish something, such as a meeting. Avoid using it with people in most contexts, except in very informal conversations.Use 'lock it' when referring to securing doors, cabinets, or devices. Suitable for most contexts. Avoid slang situations.

See it in real clips

Close
Lock it

Frequently asked questions: Close vs Lock it

What's the difference between Close and Lock it?

Close: To shut something, like a door or a window. Lock it: To secure something by closing it.

Which is more common: Close and Lock it?

Close is the most common in everyday English.

Can you show an example of each?

Close: Please close the door before you leave. Lock it: Make sure to lock it before you leave the house.

Can I use Close and Lock it interchangeably?

Not always. Close and Lock it are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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