- Definitions|2
- Thesaurus|664
- Abbreviations|0
| encouraged(adjective, light, bright) | |
| encouraging(adjective, light, bright) | |
| exhilarating(adjective, light, bright) | |
| fortunate(adjective, joyous) | |
| gay(adjective, decent) | |
| glad(adjective, light, bright) | |
| gladsome | |
| heartened(adjective, blue, decent, cast-down, downhearted) | |
| hopeful(adjective, light, bright) | |
| joyful(adjective, light, bright) | |
| light(adjective, bright) | |
| lucky(adjective, joyous) | |
| mirthful | |
| pleasant(adjective, light, bright) | |
| rich(adjective, light, bright) | |
| sparkling(adjective, light, bright) | |
| timely(adjective, joyous) | |
| upbeat | |
| uplifting(adjective, light, bright) | |
| vivacious(adjective, light, bright) |
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| APA | Smart Define. (2015). mirthless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mirthless/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "mirthless thesaurus" https://smartdefine.org/mirthless/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, mirthless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mirthless/thesaurus/antonyms>. |
| MLA | Smart Define. "mirthless thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/mirthless/thesaurus/antonyms> |