| incisive(clear, definite, realistic, explicit, vivid) | |
| incontrovertible(simple, sharp, distinct, understandable, well-defined) | |
| indubitable(adjective, straightforward, precise, unambiguous, understandable) | |
| intelligent(adjective, clear, sound, reasonable, sensible) | |
| intense(adjective, sharp, bright, powerful, rich) | |
| judicious(clear, sound, reasonable, sensible, healthy) | |
| keen | |
| levelheaded(adjective, calm, quiet, sound, reasonable) | |
| lucidity(noun, sanity) | |
| lurid(adjective, bright) | |
| neat(adjective, clear, simple, bright, clean) | |
| open-and-shut(adjective, obvious, manifest, broad, evident) | |
| ordered | |
| orderly | |
| perfect(adjective, simple, bright, clean, plain) | |
| phosphorescent(adjective, bright) | |
| picturesque(adjective, sharp, bright, intense, powerful) | |
| practical(adjective, calm, sensible, dark, restrained) | |
| reasoning(sound, reasonable, sensible, intellectual, mental) | |
| recognisably different |
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| APA | Smart Define. (2016). lucid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/lucid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "lucid thesaurus" https://smartdefine.org/lucid/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, lucid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/lucid/thesaurus/synonyms>. |
| MLA | Smart Define. "lucid thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/lucid/thesaurus/synonyms> |