How to say "unconscious" in Japanese

• 無意識的むいしきてき
  na-adjectiveCovers 'unconscious' as an adjective for actions or behavior done without deliberate thought or awareness. It is the adjectival form of 無意識, though less common than that word.
• アンコンシャス
  na-adjectiveA katakana rendering of the English word itself. It is seldom the word you want: 無意識 is the common Japanese term for the unconscious, leaving this loanword a marginal choice.
• 無自覚むじかく
  na-adjective, nounCovers 'unconscious' in the sense of being unconscious of something — not noticing or failing to be aware. It is not the word for someone rendered unconscious.
• 戦闘不能せんとうふのう
  expressionLiterally 'unable to fight'; it covers 'unconscious' only for a fighter or game character who is knocked out, and can extend to the dead. It is not the word for the psychological unconscious.
• 無意識むいしきCommon
  na-adjective, no-adjectiveThe common, default word: as a noun it means the unconscious mind, and its range also covers involuntary, automatic, mechanical behavior. For most senses of 'unconscious', start here.
  お母かあさんは無意識むいしきに椅子いすをつかんだ。↗

  Unconsciously my mom took hold of the chair.

Use 無意識 as the default for the unconscious mind and involuntary actions, 無意識的 for adjectival uses, 無自覚 for being unconscious of something, 戦闘不能 for knocked-out fighters, and 「アンコンシャス」 rarely.

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

• 無意識的むいしきてきunconscious
• アンコンシャスunconscious
• 無自覚むじかくunaware
• 戦闘不能せんとうふのうunable to fight (esp. in video games)
• むしthing inside one's body believed to influence one's thoughts and feelings
• 無意識むいしきunconscious