A good word definition should be characterized by its lucidity, or clarity. In other words, it should be clear and easy to understand — like this one.

Lucidity comes from the Latin lucidus meaning "light, bright, clear." Certainly when something is light, bright, and clear, it's ripe with the quality of lucidity. An easy-to-read textbook is characterized by lucidity. A person too can possess a quality of lucidity, one that would allow her to express ideas as clearly as possible.

Definitions of lucidity

n free from obscurity and easy to understand; the comprehensibility of clear expression

clarity, clearness, limpidity, lucidness, pellucidity
abstruseness, obscureness, obscurity, reconditeness
the quality of being unclear or abstruse and hard to understand
incomprehensibility as a result of not being clear
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having a single meaning (absence of ambiguity) usually of individual words or phrases
maximum clarity or distinctness of an idea
clearcutness, preciseness
clarity as a consequence of precision
perspicuity, perspicuousness, plainness
clarity as a consequence of being perspicuous
unambiguity, unequivocalness
clarity achieved by the avoidance of ambiguity
clarity as a consequence of being explicit
Type of:
comprehensibility, understandability
the quality of comprehensible language or thought

n a lucid state of mind; not confused

Type of:
saneness, sanity
normal or sound powers of mind

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