light, brightness, clarity
Something that is pellucid is either extremely clear because it is transparent to the eye or it is very easy for the mind to understand.
If you elucidate something, you make it easier to understand by giving more relevant information.
If someone is lucid, they are able to understand things and think clearly; this adjective also describes writing or speech that is crystal clear and easy to understand.
A translucent object allows some light to pass through it.
free from obscurity and easy to understand
the quality of allowing light to pass diffusely
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