"perspicuous" in the adjective sense
1. limpid, lucid, luculent, pellucid, crystal clear, perspicuous
of language) transparently clear easily understandable
"writes in a limpid style"
"lucid directions"
"a luculent oration"- Robert Burton
"pellucid prose"
"a crystal clear explanation"
"a perspicuous argument"
Source: WordNet® (An amazing lexical database of English)
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