Question 1

What does "key in" mean?

Accepted Answer

To enter information by typing it on a keyboard or keypad.

Question 2

How do you use "key in" in a sentence?

Accepted Answer

Please key in your PIN number to complete the transaction.

Question 3

Is "key in" formal or informal?

Accepted Answer

"key in" is register-neutral — appropriate in both casual and formal contexts. Common in instructions for ATMs, phones, computers, and software. Slightly more formal than 'type in'. Very common in British English instructions.

key in

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