How to say "dummy" in Japanese

• モデルJLPT N2approx.Common
  nounPrimarily the word for 'model' — a sample, representation, or mock-up of a product or design. Read its 'dummy' gloss in that mock-up sense; a stand-in figure or placeholder is not what it means.
  彼かれは今いままでに９体たいの人型ひとがたロボットを製造せいぞうしていたが、その全すべてはデモンストレーションモデルだった。↗

  Up to now he had made nine humanoid robots but they were all demonstration models.
• ダミーCommon
  nounThe direct borrowing from English and the word for the stand-in senses: a lifeless imitation of a person or object, as in crash tests, or a placeholder for data or content.
• 模型もけいJLPT N1approx.Common
  no-adjectiveThe word for a scale model or replica — a miniature of a building, vehicle, or the like. It fits 'dummy' only where a replica of an object is meant, not a stand-in person or placeholder.
  父ちちは私に船ふねの模型もけいを作つくってくれた。↗

  Father made me a model of a ship.

「ダミー」 is the direct borrowing for a stand-in figure or placeholder; 「モデル」 and 模型 are really 'model' words, covering 'dummy' only when a mock-up or replica of a thing is meant.

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

• モデルmodel
• ダミーdummy
• 模型もけいmodel
• くるくるぱーdummy
• 傀儡かいらいpuppet
• おしゃぶりteething ring
• アーパーstupid person
• たわけ者たわけものidiot
• 戯け者おどけものidiot
• こっけい者こっけいしゃidiot
• スルーleaving a passing ball for a teammate (in soccer)
• かかしfigurehead