noun: the quality of being impenetrable (by people or light or missiles etc.)
Length: 14 letters
Scrabble value: 21
Words with Friends value: 23
Literati value: 18
TWL (USA): Found
SOWPODS (UK): Found
imperviousness
imperiousness
perviousness
unimpressive
unpermissive
impiousness
supervision
impervious
impression
impressive
impureness
permission
permissive
responsive
suspensive
imperious
improvise
isomerise
minipress
missioner
piousness
prevision
prosiness
remission
sensorium
sermonise
soupiness
supervise
suspensor
verminous
emersion
emission
enuresis
espresso
eversion
imprison
meissner
meriones
missouri
monsieur
neurosis
omissive
oneirism
perineum
peroneus
pervious
premises
preussen
previous
primness
promisee
pureness
reimpose
resinous
response
resupine
revision
ripeness
ropiness
rosiness
simonise
soreness
sourness
souvenir
spermous
sureness
suspense
universe
emerson
empirin
empress
envious
episome
erosive
espouse
impious
impress
improve
inspire
inverse
iresine
meiosis
miniver
mission
missive
moneses
nemesis
nervous
osmerus
overuse
pensive
perseus
pioneer
pismire
poseuse
poussin
premise
premiss
presume
previse
privine
promise
reissue
rossini
semipro
serinus
serious
serpens
session
siemens
simpson
sinoper
sinopis
spenser
spinose
spinous
sunrise
sunrose
supreme
supremo
surmise
suspire
version
vespers
emesis
empire
enosis
ensure
epirus
ermine
eumops
europe
impose
impure
inpour
insure
ionise
isomer
issuer
menses
meprin
merino
merops
minors
miosis
missis
missus
misuse
moreen
mouser
mousse
murine
nereus
nerium
nerves
nervus
nessie
nivose
noesis
oeuvre
opener
orpine
osiris
peneus
pernio
pernis
person
peruse
pieris
pineus
pisser
pissis
poseur
possum
premie
prevue
primus
prison
proven
psenes
purine
purism
remise
remiss
remove
reopen
repine
repose
resume
revise
rimose
senior
sensor
sepsis
series
serine
sermon
serous
sevens
severn
simeon
simper
sirius
sniper
soiree
sonsie
sousse
spinus
spouse
suisse
sumner
supine
umpire
unripe
uprise
ursine
venire
venose
venous
vermin
vermis
vesper
vinous
virino
virion
vision
ensis
ensue
envoi
eosin
eprom
erose
essen
evers
inure
ipsus
irons
isere
issue
issus
meson
meuse
miner
minor
minos
minus
miser
moire
mopes
mores
morse
morus
moses
mourn
mouse
mover
movie
munro
muser
nerve
nervi
never
nevis
nevus
nisei
nisus
noemi
noise
norse
nurse
opine
opium
opsin
orpin
osier
ovine
penis
peron
pinus
pious
pisum
poise
poser
posse
preen
press
prime
primo
prion
prise
prism
prone
prose
prove
prune
pruno
puree
purim
purse
reims
remus
resin
reuse
revue
rinse
ripen
risen
rosin
rouse
rumen
rupee
seine
seism
semen
senor
sense
serin
serum
serve
servo
seven
sever
sieve
simon
sinus
siren
siris
sirup
sison
sissu
sneer
snipe
snips
snore
sorus
souse
speer
sperm
spine
spire
spore
spree
sprue
spume
spurn
sumer
suomi
super
urine
venom
venue
venus
vepse
verne
verse
verso
viper
vireo
virus
visor
vomer
eire
emir
epos
erie
erin
eris
erne
eros
erse
esop
euro
even
ever
iris
iron
isis
ives
meir
menu
mere
mess
mien
mine
mini
mips
mire
miri
miro
miso
miss
mons
mope
more
morn
mors
moss
moue
move
muir
muon
muse
muss
neem
nero
ness
neve
nipr
nisi
nome
norm
nose
nous
nrem
omen
onus
open
opus
ouse
oven
over
ovis
ovum
peen
peer
peon
peri
perm
peru
peso
pier
pine
pion
piss
poem
pome
pone
pons
pore
porn
pose
pour
prim
prom
pure
puss
rein
reno
rime
rimu
ripe
rise
rive
rome
romp
rope
rose
ross
roue
rous
rove
ruin
rump
rune
ruse
seem
seep
seer
semi
sene
sens
sere
sess
sine
sion
sire
sise
siss
sium
snip
some
sone
sops
sore
soup
sour
spin
spiv
spue
spur
sspe
ssri
suer
sumo
sump
sure
unio
user
usps
ussr
usss
veer
vein
veps
vine
vino
vise
emu
ene
eon
eos
epi
ern
ese
esm
esp
esr
eve
iis
imo
imp
imu
inr
ins
ion
iop
iou
ipo
ipv
ire
irs
isi
ism
isn
ivp
mei
men
min
mon
mop
mps
mri
mrs
mus
mvp
nee
neo
nim
nip
nmr
nov
nro
nsu
ois
one
oni
ops
opv
ore
pee
pei
pen
pes
pie
pin
pms
poe
poi
pom
prn
pro
psi
pun
pus
rem
rep
res
rev
rim
rio
rip
roe
roi
rom
ron
rpm
rue
rum
run
rus
see
sen
sep
sin
sip
sir
sis
snp
som
son
sop
sos
sou
sse
sss
sue
sum
sun
sup
sur
sus
suv
svr
ump
urn
use
usn
vie
vii
vim
vip
ee
em
en
er
es
eu
ev
ie
ii
in
io
ip
ir
iv
me
mi
mn
mo
mp
mr
ms
mu
mv
ne
ni
nm
no
np
nu
nv
on
or
os
ov
pe
pi
pm
po
pr
ps
pu
re
ri
rn
ro
ru
rv
se
si
sm
sn
so
sr
ss
un
up
ur
us
uv
vi
e
i
m
n
o
p
r
s
u
v
imperturbability
imperturbable
imperturbableness
imperviable
impetiginous
impetigo
impetuosity
impetuous
impetuously