onefold
easy peasy
uncomplicated
simplistic
nothing to it
ultrasimple
purely and simply
supersimple
plain sailing
clear cut
there's nothing to it
stock
straightforwardly
cut and dried
forthright
straightforward
haplo-
easyish
cake walk
downhill
nimps
smooth
mick
plainly
eathy
easy
uncomplication
decomplication
child's play
plain as Dunstable highway
uncryptic
simplish
easy as pie
piss-easy
pimpsy
easy as falling off a log
simple as kiss your hand
basic
basical
au naturel
when it's at home
supereasy
unpretentious
unembroidered
easy as 123
easy as ABC
flatling
plat
straight talk
stern
straight from the shoulder
stark
severe
simplex
austere
plainful
dizzy
spell things out
nontaxing
bludge
spell out
rondoletto
unquibbled
cinchy
words of one syllable
cinch
plaintively
unembellished
uncryptically
easify
plain
unelaborate
unpretended
squarely
easy peasy lemon squeezy
up and down
in words of one syllable
lor
vlakte
uniplex
monoplex
detailless
like taking candy from a baby
incomplex
rudimentally
nonbasic
streamlined
ingenuousness
explain
chaste
briefly
open-and-shut
lead-pipe cinch
evidently
apparently
obviously
manifestly