work like a dream
no sweat
tick over
run like a top
workable
make light work of
swimmingly
readily
unchallengingly
airtight
comfortably
hitchlessness
trouble-free
clean
slip
skate
float like a butterfly
thriftly
flawlessly
manageably
cleanly
soft snap
leave no stone unturned
viable
wieldy
smooth
well-oiled
smoothly
efficient
with one hand tied behind one's back
gentle
quick
speedy
deft-handed
docile
unbungling
in a walk
failureless
make little of
God's algorithm
handily
frowey
wasteless
at a canter
unproblematically
hands down
exceptionlessly
quick-handed
effortlessly
amacrine
soft
unfutile
easily
unobstructedly
seamlessly
high speed, low drag
mistakeless
eath
coast
one-handed
well-run
painless
on the boil
nimbly
unfumbling
pleasure cruise
unmistakingly
get along
agilely
conveniently
strainlessly
break a butterfly upon the wheel
expedite
like clockwork
sweep through
breeze through
ace
stand there like a lemon
unflappable
pass with flying colors
strainless
ungainfully
tirelessly
facile
nail
efficiently
sit there like a lemon
fault-free
sail through
tunably
easiness
unhaphazard
immaculate