noun: a lack of efficacy
Length: 17 letters
Scrabble value: 27
Words with Friends value: 32
Literati value: 21
TWL (USA): Not found
SOWPODS (UK): Not found
inefficaciousness
efficaciousness
inefficacious
conciseness
efficacious
insouciance
succession
uneasiness
accession
ascension
caffeinic
cocainise
coiffeuse
confucian
consensus
noisiness
sauciness
secession
affusion
asuncion
caffeine
canonise
confines
cosiness
easiness
effusion
ensconce
finances
fineness
incienso
incision
infusion
issuance
nascence
niceness
nosiness
nuisance
safeness
sainfoin
saneness
scansion
scission
socinian
unionise
acinose
acinous
anionic
ascesis
asinine
caffein
caisson
canonic
caseous
cassino
cassius
cession
ciconia
cnossus
cocaine
concise
concuss
conessi
confess
confine
confuse
cuisine
enounce
faience
fiancee
finance
finesse
fission
funnies
iciness
incense
inosine
nicosia
oceanic
oceanus
offence
offense
oneness
oniscus
oscines
sanfoin
sanious
science
scincus
senecan
senecio
session
socinus
suasion
success
suffice
access
accuse
acinic
acinos
acinus
affine
aussie
cancun
canine
cannes
casein
casino
cassie
census
cnicus
cocain
coffea
coffee
coffin
coiffe
cosine
cousin
cuisse
ecesis
efface
effuse
encase
enesco
enosis
eonian
faeces
fanion
fasces
fauces
fennic
fenusa
fescue
fiance
fiasco
fincen
finnic
fusain
fusion
iconic
incase
incise
infuse
insane
ionian
ionise
nasion
nessie
niacin
nicene
nissan
noesis
nuance
nuncio
office
oscine
sanies
scenic
sconce
scouse
seance
season
seneca
sienna
siouan
sonsie
sousse
succos
suisse
susian
uncase
unease
unesco
unicef
unison
unsafe
unseen
usance
anion
anise
ascii
ascus
canis
canoe
canon
cause
cease
cense
cisco
cocus
conic
cosec
cusco
ennui
ensis
ensue
eosin
essen
feces
fence
fesse
ficus
finis
focus
fossa
fosse
fusee
ianfu
icaco
inane
incan
incus
inion
ionia
ionic
issue
issus
nance
nanus
niece
nisan
nisei
nisus
noise
nonce
nones
oasis
ocean
oscan
ounce
sacco
saone
sauce
scene
scion
scoff
scone
scuff
seine
senna
sense
sinai
sinus
sison
sissu
snafu
sniff
snuff
sofia
sonic
sousa
souse
sunna
sunni
union
usnea
acne
aeon
anne
anon
anus
asin
asio
cafe
caff
cain
cane
case
ciao
cisc
coca
coif
coin
cone
conn
coss
coue
csis
cuff
cuon
cuss
ease
esau
face
fain
faun
fess
fica
fice
fief
fife
fifo
fine
finn
fisa
fisc
fuse
fuss
icao
icon
inca
info
isis
naif
neon
ness
nice
nicu
niff
nina
nine
nisi
none
nose
noun
nous
once
onus
ouse
safe
sane
sass
scan
scsi
sene
sens
sess
sian
sine
sion
sise
siss
sofa
sone
sufi
susa
unai
unco
unio
usaf
usss
acc
ace
aec
ain
ane
ani
ano
ans
anu
ass
auc
can
ceo
cfc
cfo
cia
cio
cis
cns
con
cos
cse
cue
eas
ecc
ecf
eec
eff
ene
eon
eos
ese
fae
fan
fao
fas
fcc
fcs
fee
fen
fes
fin
foe
fun
icc
ice
icu
ifc
iii
iis
inc
inn
ins
ion
iou
isi
isn
nac
nan
nec
nee
neo
nne
noc
non
nsa
nsc
nsf
nsu
nun
oaf
oas
oca
off
ois
one
oni
sac
sas
sea
sec
see
sen
sic
sif
sin
sis
son
sos
sou
ssa
sse
sss
sue
sun
sus
uca
ufa
ufo
usa
use
usn
ac
ai
an
as
au
ca
cc
ce
cf
ci
co
cs
cu
ea
ec
ee
en
es
eu
fa
fe
fo
ia
ic
ie
ii
in
io
na
nc
ne
ni
no
nu
on
os
sa
sc
se
si
sn
so
ss
un
us
a
c
e
f
i
n
o
s
u
ineffectuality
ineffectually
ineffectualness
inefficaciously
inefficacy
inefficiency
inefficient
inefficiently
inelaborate