幻覚|げんかくgenkaku[0]heiban (flat)

1. nounhallucination; illusion
   幻覚げんかくが見みえると言いっている。↗

   She says she is seeing things.

• Synonym幻影げんえいWrittenA written word for a phantom or illusory image, also one formed in the mind; 「幻覚」 is perceiving something that does not exist.
• SynonymイリュージョンCasualColloquial loanword for an illusion; also a large-scale magic show. Unlike 「幻覚」, it does not suggest a perceptual disturbance.
• Synonym幻まぼろしNeutralA phantom or illusion; also figuratively something rarely seen, as in 「幻の名酒」. Unlike 「幻覚」, not a perceptual disturbance.
• Synonym幻覚症状げんかくしょうじょうFormalFormal medical term for hallucination as a symptom itself, as in 「幻覚症状が出る」.
• Synonym幻象WrittenA written word for an illusory image; rare in Japanese, and unlike 「幻覚」 it does not refer to a perceptual disturbance.
• Related幻想げんそうNeutralFantasy or daydreaming: actively picturing what is not real; not a perceptual disturbance like 「幻覚」.
• Related錯覚さっかくNeutralAn illusion or mistaken belief: misjudging something that actually exists; the stress is on getting a real thing wrong.
• Antonym現実げんじつNeutralAntonym: reality, what actually exists, standing opposite the nonexistent things perceived in 「幻覚」.

Use 「幻覚」 for perceiving something that is not really there, as in 「幻覚を見る」. Pick 「錯覚」 for mistaking something real, 「幻想」 for fantasy, 「幻影」 or 「幻」 for phantoms, and 「幻覚症状」 in medical contexts; the antonym is 「現実」.

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

1. 実際じっさいに存在そんざいしないものが存在そんざいするように知覚ちかくすること。その内容ないよう。
2. ハルシネーション。