12 letter words:
nonfrivolous18,
9 letter words:
frivolous15,
8 letter words:
fluorins11,
linurons8,
7 letter words:
frivols13,
florins10,
fluorin10,
folious10,
furioso10,
sunroof10,
unroofs10,
linuron7,
ronions7,
rosinol7,
rosolio7,
6 letter words:
frivol12,
floors9,
florin9,
flours9,
fluors9,
foison9,
folios9,
fusion9,
ovolos9,
sinful9,
unroof9,
vinous9,
inruns6,
insoul6,
inurns6,
onions6,
orison6,
orlons6,
ronion6,
solion6,
unions6,
unison6,
5 letter words:
filos8,
finos8,
firns8,
flirs8,
floor8,
flour8,
fluor8,
foils8,
foins8,
folio8,
fools8,
fouls8,
fours8,
frons8,
furls8,
fusil8,
infos8,
loofs8,
ovoli8,
ovolo8,
rolfs8,
roofs8,
sulfo8,
vinos8,
viols8,
virls8,
virus8,
visor8,
inrun5,
inurn5,
irons5,
linns5,
linos5,
lions5,
loins5,
loons5,
loris5,
louis5,
lours5,
noils5,
noirs5,
nolos5,
noons5,
noris5,
nouns5,
nurls5,
olios5,
onion5,
orlon5,
ornis5,
roils5,
rosin5,
ruins5,
snool5,
solon5,
union5,
4 letter words:
filo7,
fils7,
fino7,
fins7,
firn7,
firs7,
flir7,
flus7,
foil7,
foin7,
fons7,
fool7,
foul7,
four7,
funs7,
furl7,
furs7,
info7,
loof7,
luvs7,
rifs7,
rolf7,
roof7,
surf7,
vino7,
viol7,
virl7,
inns4,
inro4,
ions4,
iron4,
linn4,
lino4,
lins4,
lion4,
loin4,
loon4,
loos4,
lorn4,
lour4,
nils4,
noil4,
noir4,
nolo4,
noon4,
nori4,
noun4,
nous4,
nuns4,
nurl4,
oils4,
olio4,
onos4,
onus4,
ours4,
rins4,
roil4,
ruin4,
runs4,
silo4,
slur4,
soil4,
soli4,
solo4,
soon4,
sori4,
sorn4,
soul4,
sour4,
sunn4,
urns4,
3 letter words:
fil6,
fin6,
fir6,
flu6,
fon6,
for6,
fou6,
fro6,
fun6,
fur6,
ifs6,
luv6,
rif6,
vis6,
inn3,
ins3,
ion3,
lin3,
lis3,
loo3,
nil3,
noo3,
nor3,
nos3,
nun3,
nus3,
oil3,
ono3,
ons3,
ors3,
our3,
rin3,
run3,
sin3,
sir3,
sol3,
son3,
sou3,
sri3,
sun3,
uns3,
urn3,
2 letter words:
if5,
of5,
in2,
is2,
li2,
lo2,
no2,
nu2,
oi2,
on2,
or2,
os2,
si2,
so2,
un2,
us2,
