LIMPID
limpid, lucid, luculent, pellucid, crystal clear, perspicuous
(adjective) (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”
crystalline, crystal clear, limpid, lucid, pellucid, transparent
(adjective) transmitting light; able to be seen through with clarity; “the cold crystalline water of melted snow”; “crystal clear skies”; “could see the sand on the bottom of the limpid pool”; “lucid air”; “a pellucid brook”; “transparent crystal”
liquid, limpid
(adjective) clear and bright; “the liquid air of a spring morning”; “eyes shining with a liquid luster”; “limpid blue eyes”
Source: WordNet® 3.1
Etymology
Adjective
limpid (comparative more limpid, superlative most limpid)
Clear, transparent or bright.
Source: Wiktionary
Lim"pid, a. Etym: [L.limpidus; akin to Gr. limpide. Cf. Lamp.]
Definition: Characterized by clearness or transparency; clear; as, a limpid
stream.
Springs which were clear, fresh, and limpid. Woodward.
Syn.
– Clear; transparent; pellucid; lucid; pure; crystal; translucent;
bright.
Source: Webster’s Unabridged Dictionary 1913 Edition