How to say "downstairs" in Japanese

• 階下かいかCommon
  nounThe common word for the floor below the one you are on; use it when saying that someone or something is downstairs, such as a person waiting on the lower floor of a building.
  ディナーを食たべに階下かいかに行いこう。↗

  Let's go downstairs for dinner.
• ＤＮディー・エヌ
  nounAn abbreviated form, read ディー・エヌ, meaning simply 'downstairs'; being less common, it is seldom the word you want — learn to recognize it, but say 階下 instead.

For the ordinary sense of 'downstairs', the floor below where you are, use 階下; ＤＮ is only a less common abbreviated form of the same idea and is rarely the word learners need.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 階下かいかlower floor
• ＤＮディー・エヌdownstairs