67 entries under tough topic. ×
| effective(adjective, good, strong, power) | |
| active(adjective, strong, direct, energetic) | |
| powerful(adjective, good, strong, power, direct) | |
| energetic(adjective, strong, direct, violent) | |
| potent(adjective, good, strong, direct, sound) | |
| dynamic(adjective, strong, energetic, powerful) | |
| forcible(adjective, strong, direct, energetic) | |
| strong(adjective, good, sound, right) | |
| sound(adjective, strong, direct, reasonable) | |
| brisk(adjective, strong, intense, energetic) | |
| careful(adjective, complete, exact, full) | |
| exact(adjective, complete, full, ordinary) | |
| forceful(adjective, strong, direct, intense) | |
| lively(adjective, strong, energetic, powerful) | |
| painstaking(adjective, complete, exact, full) | |
| persuasive(adjective, good, strong, direct, sound) | |
| robust(adjective, strong, intense, energetic) | |
| all-embracing(complete, full, conscientious, exhaustive) | |
| all-out(complete, full, conscientious, exhaustive) | |
| all the way(expression, idiom, complete, full) |
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| APA | Smart Define. (2015). efficient thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/efficient/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "efficient thesaurus" https://smartdefine.org/efficient/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, efficient thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/efficient/thesaurus/synonyms>. |
| MLA | Smart Define. "efficient thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/efficient/thesaurus/synonyms> |