How to say "gown" in Japanese

• ガウンCommon
  nounThe loanword for the garment itself: a long, loose gown, especially an elegant dress worn on formal occasions. Use this when talking about the garment a person wears.
  彼女かのじょは繻子しゅすのガウンを着きていた。↗

  She was wearing a gown of satin.
• 衣ころもCommon
  nounReally covers 'robe': a loose garment with a literary or religious nuance, as for a monk's robe. For a gown you wear, ガウン is the word; 衣 is seldom what you want.
  衣ころもばかりで和尚おしょうはできぬ。↗

  The robes do not make the monk.

For 'gown' as an actual garment — a long, loose gown or elegant dress — use 「ガウン」; 衣 means 'robe', with a literary or religious nuance, and is seldom the word for the garment itself.

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

• ガウンgown
• 職服しょくふくuniform (for a profession)
• 衣ころもgown