How to say "den" in Japanese

Choosing the right word
  • 書斎しょさいJLPT N3approx.Common
    nounCovers the den of a house: a quiet room for reading or work, corresponding to study, library, or home office. Use this when talking about a room in a home, not an animal's dwelling.
    このドアは書斎しょさいに通つうじている。↗
    This door leads to the study.
  • 洞穴ほらあなCommon
    nounCovers the wild-animal sense of den, meaning a cave, cavern, or grotto where an animal lives. It denotes a natural hollow in rock rather than a room or a nest.
    その洞穴ほらあなはその少年しょうねんたちによって発見はっけんされたのですか。↗
    Was the cave found by the boys?
  • 巣すJLPT N3approx.Common
    nounCovers an animal's den as its nest or home. Its core sense is nest or lair, so for a den as a room or a cave this is not the word you want; think of where an animal actually lives and raises young.

Use 書斎 for a den as a study or home workroom in the house, 洞穴 for a wild animal's den in the sense of a cave or lair, and 巣 for an animal's den as its nest or burrow.

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

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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