55 entries under active topic. ×
| effective(adjective, good, strong, power, tough) | |
| able(adjective, good, power, direct) | |
| competent(adjective, good, power, direct, skill) | |
| capable(adjective, power, direct, keen, smart) | |
| useful(adjective, direct, real, flawless) | |
| operative(adjective, strong, direct, energetic, lively) | |
| powerful(adjective, good, strong, power, direct) | |
| serviceable(adjective, open, direct, reasonable) | |
| energetic(adjective, strong, direct, tough, violent) | |
| potent(adjective, good, strong, direct, sound) | |
| dynamic(adjective, strong, tough, energetic, powerful) | |
| forcible(adjective, strong, direct, tough, energetic) | |
| strong(adjective, good, sound, tough, right) | |
| tough(adjective, strong, complete, intense, exact) | |
| power(strong, energetic, vigorous, controlling) | |
| sound(adjective, strong, direct, tough, reasonable) | |
| brisk(adjective, strong, tough, intense, energetic) | |
| forceful(adjective, strong, direct, tough, intense) | |
| lively(adjective, strong, tough, energetic, powerful) | |
| persuasive(adjective, good, strong, direct, sound) |
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| APA | Smart Define. (2015). efficient thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/efficient/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "efficient thesaurus" https://smartdefine.org/efficient/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, efficient thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficient/thesaurus/synonyms>. |
| MLA | Smart Define. "efficient thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/efficient/thesaurus/synonyms> |