Ways to say it
| Japanese | Romanization (Wiktionary) | IPA |
|---|---|---|
| 幻覚 | genkaku | [ɡẽ̞ŋka̠kɯ̟] (narrow) |
| 幻想 | gensō | [ɡẽ̞ɰ̃so̞ː] (narrow) |
The word for illusion depends heavily on whether you are describing a physical sensation or an abstract concept. Use 幻覚 to describe a physiological or psychological phenomenon where a person perceives something that does not physically exist, such as a hallucination. Use 幻想 for abstract, conceptual or philosophical illusions, such as a daydream or a false belief.
What does it mean word for word?
Both words share the kanji 幻 (gen), which means phantom, vision or illusion.
Which one should you use?
The distinction between the two forms is based on the nature of the illusion. 幻覚 (genkaku) is used for sensory hallucinations, such as seeing or hearing things that are not present. In contrast, 幻想 (gensō) refers to abstract or mental illusions, fantasies or daydreams that are not physically perceived by the senses.
How do you pronounce it?
genkaku
Did you know?
- While English speakers might use 'illusion' for both a magic trick and a hallucination, using 幻覚 to describe a magician's trick in Japanese would sound as if the magician is having a medical crisis.
- Japanese uses the word 幻 (gen) as a prefix to describe something extremely rare or legendary, such as a 'phantom' item that is almost impossible to find in a store.
- In Japanese pop culture, particularly in anime and manga, characters with the power to create illusions often describe their abilities using the word 幻術 (genjutsu), which means 'illusion technique'.
Examples in context
- 安全なんて幻想だ。Safety is an illusion.This sentence shows how to use 幻想 to describe a conceptual illusion like safety.Tatoeba #5748765 by daifons, translation #5748223 by CM
- 恒久的な平和など幻想に過ぎない。Permanent peace is nothing but an illusion.This sentence uses 幻想 to describe a philosophical illusion regarding peace.Tatoeba #173603 by KK_kaku_, translation #26422 by CK
- 幻覚を見せられているのかAm I witnessing some kind of illusion?This sentence demonstrates the use of 幻覚 when asking about a sensory hallucination.
- 幻想は現実とは異なるものを見ることです。Illusion is seeing something different from reality.
- 彼は幻想の世界に迷い込んだ。He wandered into a world of illusions.
- 彼女の笑顔は幻でした。Her smile was an illusion.
- あの絵はまるで幻のようだ。That painting seems like an illusion.
- 1 more sentence on Tatoeba
Example conversation
Two friends are discussing a strange phenomenon they saw in the desert.
- 大翔 Hirotoあれは幻覚だったのかな。Are wa genkaku datta no kana.I wonder if that was an illusion.
- 美咲 Misakiきっと幻覚よ。何も見えなかったはずよ。Kitto genkaku yo. Nani mo mienakatta hazu yo.It was surely an illusion. There shouldn't have been anything there.
- 大翔 Hiroto美咲もそう思う？Misaki mo sou omou?Do you think so too, Misaki?
- 美咲 Misakiええ、あまりに不思議な光景だったから。Ee, amari ni fushigi na koukei datta kara.Yes, because it was such a strange sight.
Sources
- Wiktionary, “illusion” translations and entries 幻覚, 幻想, CC BY-SA 4.0, dump of 2026-09-26.
- Example sentences: Tatoeba CC BY 2.0 FR, Wiktionary CC BY-SA 4.0.
