Synonyms:
fantasy_world, phantasy_world, fairyland
Meaning: something existing solely in the imagination (but often mistaken for reality)
Usage examples
"It's the finest country in all the world, even if it is a fairyland, and I'm happy every minute I live in it," said the Shaggy Man.
I don't quite know what I had expected--a sort of fairyland Eastern city, all white marble and blue water, and stately Turks in surplices, and veiled houris, and roses and nightingales, and some sort of string band discoursing sweet music.
At any rate, Zidoc, who considered himself quite the most wonderful enchanter in Fairyland, was furious at being opposed, and told the old enchanter, very angrily, that he was not to have his classes any more and must leave the college at once.
The old enchanter liked this life of quiet and study, and doubtless would have been teaching in Fairyland to this very day, had he not been so unfortunate as to quarrel with the terrible sorcerer Zidoc, who was then Lord High Chancellor of the Fairies' College.