Lapalissian
superevident
painfully obvious
superapparent
plain as print
plain to see
patent
plain as porridge
plain as day
there for everyone to see
writ large
crystal
transparent
constat
stone cold
overobvious
decided
hyperclear
a priori
broad
crystal clear
plainful
bright
unquestionable
plain as Dunstable highway
well-marked
unsubtle
marked
glaring
ultraclear
clear as day
clear as a mirror
frank
unmistakable
decisive
cutglass
phanerite
clear as a bell
superclear
pellucid
conspicuous
superabsolute
easy as falling off a log
bait
clear as crystal
pimpsy
simple as kiss your hand
piss-easy
easy as pie
plain as the nose on one's face