crystal clear
adj 1: 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 cristal" [syn: crystalline, limpid, lucid,
pellucid, transparent]
2: (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" [syn:
limpid, lucid, luculent, pellucid, perspicuous]