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