かぎ

a lock

JLPT N5

Character Breakdown

Meaning and Usage

The word 鍵 (かぎ) primarily means "key" or "lock" in everyday Japanese. It is used to refer to physical keys for doors, boxes, or other locked items, as well as the concept of locking itself.

Common Collocations

  • 鍵をかける: to lock (something)
  • 鍵を忘れる: to forget the key
  • 鍵がかかっている: something is locked

Usage Notes

When using 鍵, it often appears in contexts related to security or access. The verb かける (to put on) is commonly combined with 鍵 to express locking something. Be careful not to confuse 鍵 (key) with 鍵穴 (keyhole).

Register and Politeness

The word 鍵 is neutral and used in both casual and formal contexts. It is a very common noun and essential vocabulary for daily life.

Common Mistakes

Learners sometimes omit the particle を when saying 鍵をかける, but the particle is necessary to indicate the object being locked.

Example Sentences

どあのかぎをわすれてしまいました。

I forgot the key to the door.

このはこにはかぎがかかっています。

This box is locked.

かぎをかけてからでかけてください。

Please lock it before you go out.