- Definitions|1
- Thesaurus|453
- Abbreviations|0
| extravagant | |
| faint(adjective, slow, tired, unsteady, dizzy) | |
| fatuous | |
| fogged | |
| foolheaded(silly, preposterous, wacky, impossible, ludicrous) | |
| funny | |
| gay | |
| giddier | |
| grotesque(silly, preposterous, wacky, impossible, ludicrous) | |
| illogical | |
| immoderate | |
| impossible(silly, preposterous, wacky, ludicrous) | |
| incredible(silly, preposterous, wacky, impossible, ludicrous) | |
| insouciant | |
| jerky(silly, preposterous, wacky, impossible, ludicrous) | |
| lackadaisical | |
| lacking seriousness(expression, idiom) | |
| laughable | |
| light-headed | |
| lighthearted |
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| APA | Smart Define. (2015). slaphappy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slaphappy/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "slaphappy thesaurus" https://smartdefine.org/slaphappy/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, slaphappy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slaphappy/thesaurus/synonyms>. |
| MLA | Smart Define. "slaphappy thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/slaphappy/thesaurus/synonyms> |