- Definitions|0
- Thesaurus|47
- Abbreviations|0
| brainstorm(noun, concept, produce, idea, stimulus) | |
| fantasy(noun, fancy, dream, ambition, daydream) | |
| air castle(noun, expression, fancy, fantasy, dream) | |
| airy hope(noun, expression, fancy, fantasy, dream) | |
| castle in the air(noun, expression, idiom, fancy, fantasy) | |
| castle in the sky(noun, expression, idiom, fancy, fantasy) | |
| chimera(noun, fancy, fantasy, dream, ambition) | |
| conceit | |
| crank | |
| craze | |
| crazy idea | |
| crotchet | |
| fad | |
| false hope(noun, expression, fancy, fantasy, dream) | |
| fancy | |
| flimflam | |
| fool notion | |
| freak | |
| golden dream(noun, expression, fancy, fantasy, dream) | |
| humor |
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| APA | Smart Define. (2015). fantastic notion thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fantastic_notion/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fantastic notion thesaurus" https://smartdefine.org/fantastic_notion/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, fantastic notion thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fantastic_notion/thesaurus/synonyms>. |
| MLA | Smart Define. "fantastic notion thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/fantastic_notion/thesaurus/synonyms> |