- Definitions|1
- Thesaurus|245
- Abbreviations|0
| prolific(adjective, exuberance) | |
| rewarding(adjective, success) | |
| striking(adjective, effect, success, productivity) | |
| substantively(adverb, effect, success, productivity) | |
| successful(adjective, success) | |
| swarming(adjective, exuberance) | |
| teeming(adjective, exuberance) | |
| thriving(adjective, exuberance) | |
| ultraefficient(adjective, effect, success, productivity) | |
| useful(adjective, use, success) | |
| usefully(adverb, effect, success, productivity) | |
| valuable(adjective, success) | |
| well spent(adjective, success) | |
| with dispatch(adverb, effect, success, productivity) | |
| with immediate effect(expression, effect, success, productivity) | |
| worthwhile(adjective, success) |
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| APA | Smart Define. (2016). in vain thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/in_vain/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "in vain thesaurus" https://smartdefine.org/in_vain/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, in vain thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/in_vain/thesaurus/antonyms>. |
| MLA | Smart Define. "in vain thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/in_vain/thesaurus/antonyms> |