Definition

Of crucial importance or significance; something that is essential or necessary.

Example

The key factor in our success was teamwork.

Conversation

Did you hear about the key changes in the project schedule?

Yeah, I think those changes are really important for our timeline.

Exactly! I believe those are key factors for our success.

For sure, we need to focus on those to stay on track.

Synonyms & Antonyms

Definition

A small object used to open or close a lock, or a button on a machine that you press to make it work.

Example

I lost my house key and had to call a locksmith.

Conversation

Hey, do you have the key to your car?

Yeah, I do! I was just about to go for a drive.

Nice! I always forget where I put my key sometimes.

Definition

To adjust or set something to a specific standard or condition, often in a way that makes it work better or fit together properly.

Example

The technician had to key the settings on the machine to ensure it operated correctly.

Tense Forms

Conversation

Did you remember to key in your schedule for next week?

Oh no, I completely forgot about that!

You should do it now so you don't miss anything important.

Root Explanation

The word 'key' originates from Old English 'cāg', meaning a device used to open locks. It refers to an object that unlocks or secures something.

Memory Tip

Think of a 'device' that 'opens' locks — that's what a key does.

Visually Confused Words