12 letter words:
fireproofing21,
10 letter words:
proffering19,
9 letter words:
fireproof17,
prefiring15,
reroofing13,
8 letter words:
offering15,
proofing14,
fringier12,
refiring12,
inferior11,
peignoir11,
7 letter words:
proffer15,
griffin14,
griffon14,
reffing14,
riffing14,
offeror13,
proofer12,
reproof12,
foreign11,
forgoer11,
forgone11,
goofier11,
roofing11,
epigoni10,
goopier10,
gripier10,
perigon10,
pierogi10,
pirogen10,
pornier9,
ripieno9,
goonier8,
ignorer8,
6 letter words:
ripoff14,
fifing13,
goffer13,
goniff13,
griffe13,
offing13,
iffier12,
niffer12,
finger10,
firing10,
forego10,
forger10,
fringe10,
epigon9,
griper9,
groper9,
pieing9,
pigeon9,
pinger9,
pirogi9,
pooing9,
poring9,
reroof9,
riping9,
roofer9,
roofie9,
roping9,
operon8,
orpine8,
pernio8,
perron8,
pinier8,
poorer8,
ropier8,
eringo7,
erring7,
gooier7,
goonie7,
gorier7,
ignore7,
noogie7,
orgone7,
origin7,
region7,
ringer7,
ironer6,
5 letter words:
griff12,
fifer11,
offer11,
proof10,
feign9,
fogie9,
forge9,
forgo9,
gofer9,
gonef9,
gonif9,
gonof9,
grief9,
finer8,
firer8,
frier8,
frore8,
genip8,
gipon8,
gripe8,
grope8,
infer8,
oping8,
pengo8,
piing8,
pingo8,
pirog8,
prong8,
rifer8,
opine7,
orpin7,
poori7,
porno7,
prier7,
prion7,
prior7,
prone7,
repin7,
repro7,
ripen7,
riper7,
roper7,
genii6,
genro6,
giron6,
goner6,
groin6,
iring6,
reign6,
renig6,
rerig6,
rigor6,
roger6,
irone5,
oorie5,
4 letter words:
fief10,
fife10,
riff10,
poof9,
prof9,
frig8,
frog8,
goof8,
fern7,
fine7,
fino7,
fire7,
firn7,
foin7,
fore7,
froe7,
goop7,
gorp7,
grip7,
info7,
neif7,
ping7,
pong7,
prig7,
prog7,
reif7,
rife7,
roof7,
nope6,
open6,
pein6,
peon6,
peri6,
pier6,
pine6,
pion6,
pirn6,
pone6,
poon6,
poor6,
pore6,
porn6,
repo6,
ripe6,
rope6,
ergo5,
gien5,
girn5,
giro5,
goer5,
gone5,
goon5,
gore5,
grin5,
ogre5,
ring5,
inro4,
iron4,
noir4,
nori4,
rein4,
3 letter words:
eff9,
iff9,
off9,
fop8,
fig7,
fog7,
fen6,
fer6,
fie6,
fin6,
fir6,
foe6,
fon6,
for6,
fro6,
gip6,
peg6,
pig6,
ref6,
rif6,
nip5,
ope5,
pen5,
per5,
pie5,
pin5,
poi5,
poo5,
pro5,
rep5,
rip5,
ego4,
eng4,
erg4,
gen4,
gie4,
gin4,
goo4,
gor4,
neg4,
nog4,
reg4,
rig4,
eon3,
ern3,
err3,
ion3,
ire3,
noo3,
nor3,
one3,
ono3,
ore3,
rei3,
rin3,
roe3,
2 letter words:
ef5,
fe5,
if5,
of5,
op4,
pe4,
pi4,
go3,
en2,
er2,
in2,
ne2,
no2,
oe2,
oi2,
on2,
or2,
re2,