in one go
in one
one-shot
in a one-er
like a ripe plum
unitasking
effortless
featless
brinkless
goallessly
unicalcarate
easily
home free
effortlessly
chanceless
monotask
hands down
handily
resistanceless
stat
untesting
strainless
comfortably
unresistingly
strainlessly
nonattempt
uneagerly
competitionless
nonresister
nonresistor
hands-down
instantly
aimlessly
ceaseless
intraparticipant
diversionless
until hell freezes over
readily
unfailingly
cracklessly
failureless
give something a try
spitelessly
unattempting
goal
targetless
feed two birds with one scone
unchallengingly
short
swack
collisionlessly
to no purpose
full speed ahead
effectlessly
limitlessly
exhaustlessly
mill
fill in the blank
temptationless
give it a try
unrecoiling
have a go
vainly
momentless
push string uphill
pangless
in a heartbeat
soft snap
monotargeted
all-out
coaster
tout court
manage
give something a go
ceaselessly
inexhaustedly
gaplessly
consecutively
nonchallenging
resultlessly
thinly
unvalorously
challengeless
take a stab at
guerdonless
take a crack at
durationless
with one hand tied behind one's back
sprezzatura
assay
attemptless
straightway
fearless
unresistedly