こたつ

こたつ

table with heater, (originally) charcoal brazier in a floor well

JLPT N1

What is a こたつ?

A こたつ is a low wooden table frame covered by a heavy blanket or futon, with a heat source underneath, traditionally a charcoal brazier but now usually an electric heater. It is a common household item in Japan during the cold months.

Usage and Cultural Context

People sit around the こたつ with their legs under the blanket to stay warm while doing activities like watching TV, eating, or chatting. It is a symbol of cozy winter life in Japan.

Common Collocations

  • こたつに入る: to get into the kotatsu, meaning to sit with legs under the blanket
  • こたつ布団: the thick blanket used with the kotatsu
  • こたつの中で: inside the kotatsu, often used to describe activities done while warm

Register and Nuance

The word こたつ is casual and used in everyday conversation. It evokes a warm, homey feeling and is strongly associated with winter comfort.

Learner Tip

Don’t confuse こたつ with just any table; it specifically refers to this heated table setup. Also, note that the heat source is usually hidden under the table and covered by the blanket, so the warmth is indirect.

Example Sentences

ふゆはこたつにはいっててれびをみるのがすきです。

In winter, I like to sit in the kotatsu and watch TV.

こたつのなかでみかんをたべるのはにほんのふゆのていばんです。

Eating mandarins inside the kotatsu is a classic Japanese winter tradition.

こたつぶとんをかけると、あしもとがとてもあたたかくなります。

When you put the kotatsu blanket on, your feet become very warm.