clean-cut
clear
clear as crystal
clear as day
clear-cut
coherent
connected
consistent
crisp
crystal
crystal-clear
crystalline
defined
definite
diaphane
diaphanous
direct
distinct
explicit
express
filmy
gauzy
gossamer
gossamery
light-pervious
limpid
loud and clear
lucent
lucid
luminous
nonopaque
peekaboo
pellucid
perspicuous
plain
revealing
see-through
sheer
simple
straightforward
thin
translucent
transparent
unambiguous
unclouded
unconfused
unequivocal
univocal
unmistakable