55 entries under adjective topic. ×
| meaningful | |
| operational | |
| operative | |
| practical | |
| pregnant | |
| prolific(productive, fruitful) | |
| serviceable | |
| strong | |
| substantial | |
| sufficient | |
| valid | |
| worthwhile | |
| brilliant | |
| businesslike | |
| capable | |
| conclusive | |
| decisive | |
| deft | |
| energetic | |
| forceful |
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| APA | Smart Define. (2016). fruitless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fruitless/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "fruitless thesaurus" https://smartdefine.org/fruitless/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, fruitless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fruitless/thesaurus/antonyms>. |
| MLA | Smart Define. "fruitless thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/fruitless/thesaurus/antonyms> |