pellucid
lucid
clear as day
crystal
superclear
ultraclear
crystal clear
plain as porridge
plain as day
semiclear
decided
hyperclear
clear as crystal
luminous
accessible
clarified
articulate
plain as Dunstable highway
plain as print
expositional
clarifying
apparent
transparent
soft
well-marked
lauter
crystally clear
plain
specified
elucidative
unmistakable
comprehended
writ large
frank
patent
clarifiable
open-and-shut
plain to see
intelligible
serene
illuminable
there for everyone to see
clear as a mirror
broad
down pat
down
mastered
unambiguous
superevident
clear as a bell