See lucidity in Webster's New World Roget's A-Z Thesaurus II
noun
The quality of being clear and easy to perceive or understand:
clarity, clearness, distinctness, limpidity, limpidness, lucidness, pellucidity, pellucidness, perspicuity, perspicuousness, plainness. See clearA healthy mental state:
lucidness, mind, reason, saneness, sanity, sense (often used in plural), soundness, wit (used in plural). (Slang) marble (used in plural). See sane
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