speckless
unsullied
clean as a bean
clean as a new pin
squeaky clean
clean as a whistle
spic
spic-and-span
spotless
spick-and-span
immaculate
spick
pristine
cleanly
scratchless
clean as a new penny
pristinely
neat
stainless
trashless
hyperclean
clear-swept
ultraclean
well-kept
undirtied
apinoid
antiseptic
pavementless
unblotted
unstained
clear out
clean out
ruinless
spotlessly
well-defined
tabula rasa
garbageless
transparently
empty as a pauper's purse
cleanish
emptyish
immaculateness
spotlessness
serene
hideless
entire
shipshape
semivirgin
messlessly
empty out
messless
unvacant
null space
vacancy
unembroidered
Mother Hubbard
unspaced
level
bottle-tight
easily
straightforward
tileless
razor-thin
tidily
tidy
blotless
pure and simple
vacant
clockwork
vacuole
at first sight
emptiness
void
monochromatic
smooth as a baby's bottom
markless
smooth as oil
ultracrisp
stow
vacuitous
clean
clean as a hound's tooth
membranous
vacuum
sleeperless
smooth as butter
ideal
smolt
glabrous
bumpless