How to say "fantasy" in Japanese

Choosing the right word
  • 幻想げんそうCommon
    noun, suru verb, transitive verbCovers fantasy in the broad sense of illusion — something vividly imagined that is not real, often a vision or dreamlike image. The word to reach for when fantasy means illusory imaginings rather than a story genre.
    あなたの考かんがえはいわば幻想げんそうにすぎません。↗
    Your idea is, as it were, a castle in the air.
  • nounThe loanword, used above all for the genre — stories, films and worlds of magic and imaginary realms. Choose this when fantasy names a genre or style, not a private daydream.
  • 空想くうそうJLPT N2approx.Common
    suru verb, transitive verb, no-adjectiveFantasy as idle imagining — daydreams, fanciful ideas and make-believe spun in one's head. The natural word when the emphasis is on the act of imagining rather than on the illusory image itself.
    彼かれは空想くうそうの世界せかいに生いきている。↗
    He lives in a world of fantasy.
  • 幻想曲げんそうきょくCommon
    nounA set term for a fantasia: a musical composition in free, imaginative form. It is seldom the word you want for fantasy in general — use it only when referring to such a piece.
  • 夢幻むげんCommon
    nounFantasy as a blend of dreams and visions — dreamlike, illusory scenes with an ethereal, otherworldly feel. It paints the atmosphere rather than naming a genre or an act of imagining.

Use 幻想 for fantasy as illusion or unreal imaginings, 「ファンタジー」 for the genre of magic and imaginary worlds, 空想 for daydreams and idle fancy, 幻想曲 only for a musical fantasia, and 夢幻 for dreamlike, ethereal visions.

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

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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