lead-pipe cinch
easy peasy
cake walk
easyish
sell
day at the beach
easify
piece of piss
child's play
eath
nothing to it
no problem
picnic
garbage
nimps
eathy
mick
jack-easy
downhill
supersimple
bludge
doss
walk in the park
uncomplicated
straightforward
easy
puddysticks
simplish
layup
hay ride
cinch
easy as 123
cut and dried
plain sailing
simplistic
easy as ABC
like taking candy from a baby
unconcerned
painless
piss-easy
loon
woodcock
easy as pie
easy as falling off a log
pleasure cruise
simple as kiss your hand
maffling
doof
pimpsy
doddle
unpretended
nontaxing
unexpansively
onefold
haplo-
walkover
egg of Columbus
ultrasimple
cinchy
rondoletto
bankers' hours
skive
open-and-shut
sitter
smooth
blowout
laugher
waltz
streamlined
romp
hakuna matata
runaway
shoo-in
walkaway
unchallenging
open-hearted
uncryptic
at a canter
there's nothing to it
supereasy
decomplication
bunny
mawkin
easefully
uncomplication
noncomplicated
comfortably
unquibbled
untedious
forthright
with one hand tied behind one's back
cushy
bright-line rule
slick
easy peasy lemon squeezy
plain as Dunstable highway
incomplex
pushover