key

Definition:
1. A specially shaped piece of metal used for locking a door, starting a car, etc.
2. Something crucial for explaining.
3. Any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music.
4. A thing that makes you able to understand or achieve something.

Use 'key' in a sentence:

• 1. I'll give you a key so that you can let yourself in.
• 2. I saw you put the key in your pocket.
• 3. Use the arrow keys to scroll the list of files.
• 4. He let himself in with a duplicate key.
• 5. Typically, she couldn't find her keys.
• 6. The wedding will be a very low-key affair.
• 7. Housing is a key driver of the economy.
• 8. 'Caution' is the key word in this situation.
• 9. He fumbled the key into the ignition.
• 10. I can't think where I put the keys.
• 11. They put the key in the door and entered.
• 12. Drat! I forgot my key.
• 13. They zeroed in on the key issues.
• 14. She listened for his key in the latch.
• 15. The key to success is preparation.
• 16. Confidence is the key to success.
• 17. His contribution could be key.
• 18. Teamwork is a key feature of the training programme.
• 19. She turned the key in the lock.
• 20. He turned the key in the lock.
• 21. The key has stuck in the lock.
• 22. Leave the key in the lock.
• 23. She rammed the key into the lock.
• 24. He was a key figure in the campaign.
• 25. She got the key stuck in the lock.
• 26. Wait a minute—this isn't the right key.
• 27. The key is hanging on a string by the door.
• 28. Speed is key at this point.
• 29. He could have taken a spare key.
• 30. I've lost my key and I haven't got a spare.
• 31. Give me the boot key and I'll get the spare.
• 32. The key doesn't fit the lock.
• 33. She turned the key and the lid sprang open.
• 34. Cost was a key element in our decision.
• 35. The key question of what caused the leak remains unanswered.
• 36. Let yourself out and post the keys through the letter box.
• 37. The classes are keyed to the needs of advanced students.
• 38. This key toggles various views of the data.
• 39. The key is, how long can the federal government control the inflation rate?
• 40. Press these two keys to switch between documents on screen.
• 41. To exit from this page, press the return key.
• 42. Press the return key to enter the information.
• 43. The need to communicate is a key characteristic of human society.
• 44. Their wedding was a very low-key affair.
• 45. The president appears likely to change course on some key issues.
• 46. The driver of the car probably holds the key to solving the crime.
• 47. These units played a key functional role in the military operation.
• 48. She played a key role in the dispute.
• 49. Good communication is key to our success.
• 50. The key to his success is his logical mind.