susurrus
has been listed 76 times with 1 comment
slip
has been listed 18 times with 1 comment
sidle
has been listed 24 times with 1 comment
skulk
has been listed 43 times with 5 comments
stealthy
has been listed 9 times with 0 comments
shamus
has been listed 5 times with 2 comments
sleeper
has been listed 15 times with 1 comment
shadow
has been listed 46 times with 1 comment
subliminal
has been listed 19 times with 0 comments
subversive
has been listed 22 times with 0 comments
sneaker
has been listed 2 times with 0 comments
sleuth
has been listed 15 times with 1 comment
spooky
has been listed 14 times with 0 comments
ssssh!
has been listed 1 time with 0 comments
secret
has been listed 29 times with 1 comment
snitch
has been listed 12 times with 0 comments
sly
has been listed 29 times with 0 comments
stealth
has been listed 20 times with 3 comments
snoop
has been listed 7 times with 0 comments
stalk
has been listed 9 times with 0 comments
slide
has been listed 14 times with 0 comments
steal
has been listed 13 times with 0 comments
slither
has been listed 30 times with 2 comments
sneaky
has been listed 9 times with 0 comments
surrepent
has been listed 2 times with 3 comments
I wonder if it's an obscure rule of English that all "sneaky" words must begin with "S." :-)