8 letter words:
infusion11,
6 letter words:
fusion9,
inions6,
unions6,
unison6,
5 letter words:
finis8,
finos8,
foins8,
infos8,
inion5,
nouns5,
union5,
4 letter words:
fino7,
fins7,
foin7,
fons7,
funs7,
info7,
inns4,
ions4,
nisi4,
noun4,
nous4,
nuns4,
onus4,
sunn4,
3 letter words:
fin6,
fon6,
fou6,
fun6,
ifs6,
inn3,
ins3,
ion3,
nos3,
nun3,
nus3,
ons3,
sin3,
son3,
sou3,
sun3,
uns3,
2 letter words:
if5,
of5,
in2,
is2,
no2,
nu2,
oi2,
on2,
os2,
si2,
so2,
un2,
us2,