lucid
Meaning: clear, easily understandable
Usage: Because Guenevere’s essay was so lucid, I only had to read it once to understand her reasoning.
pellucid
Meaning: easily intelligible, clear
Usage: Wishing his book to be pellucid to the common man, Albert Camus avoided using complicated grammar when composing The Stranger.
limpid
Meaning: clear, transparent
Usage: Mr. Johnson’s limpid writing style greatly pleased readers who disliked complicated novels.
manifest
Meaning: easily seen, clear, obvious
Usage: His excitement was manifest when the team announced the final score.