adj: having frequencies below those of audible sound
Length: 10 letters
Scrabble value: 15
Words with Friends value: 18
Literati value: 12
TWL (USA): Found
SOWPODS (UK): Found
infrasonic
sainfoin
socinian
anionic
crinion
frisian
incisor
insofar
nicosia
sanfoin
acinos
arcsin
carson
casino
fanion
fiasco
finnic
franco
frisia
ionian
ironic
nasion
niacin
raisin
scoria
acorn
acris
afisr
anion
arson
ascii
cairn
cairo
canis
canon
cirio
farsi
finis
franc
incan
infra
inion
ionia
ionic
irani
irons
naris
nisan
noria
oscan
oscar
racon
ricin
rosin
sarin
scarf
scion
scorn
sinai
snarf
sofia
sonar
sonic
afro
airs
anon
arco
arno
asin
asio
cain
ciao
cira
coif
coin
coir
conn
cora
corn
cran
fain
fair
farc
faro
fica
finn
fisa
fisc
icao
icon
inca
info
iran
iris
iron
naif
narc
nina
nisi
norn
nrna
oran
orca
rain
rani
rico
risc
roan
rosa
sari
scan
scar
sian
sion
sirc
soar
sofa
ain
air
ani
ano
ans
arc
can
car
cfo
cia
cio
cis
cns
con
cos
cro
fan
fao
far
fas
fcs
fin
fir
fri
frs
ifc
iis
inc
inn
inr
ins
ion
ira
irs
isi
isn
nac
nan
noc
non
nra
nrc
nro
nsa
nsc
nsf
oaf
oar
oas
oca
ois
oni
raf
ras
rio
rna
roc
roi
ron
sac
sic
sif
sin
sir
son
ac
ai
an
ar
as
ca
cf
ci
co
cr
cs
fa
fo
fr
ia
ic
ii
in
io
ir
na
nc
ni
no
on
or
os
ra
rf
ri
rn
ro
sa
sc
si
sn
so
sr
a
c
f
i
n
o
r
s
infraction
infrahuman
inframaxillary
infrangible
infrared
infrastructure
infrequency
infrequent
infrequently
infrigidation