9 letter words:
opportune13,
7 letter words:
propone11,
outrope9,
6 letter words:
pooper10,
prenup10,
topper10,
troppo10,
unpope10,
unprop10,
operon8,
pooter8,
pouter8,
pronto8,
proton8,
punter8,
roupet8,
troupe8,
unrope8,
uproot8,
uptore8,
uptorn8,
enroot6,
notour6,
tenour6,
unroot6,
5 letter words:
epopt9,
poupe9,
poupt9,
preop9,
upper9,
erupt7,
netop7,
opter7,
poort7,
porno7,
prent7,
prone7,
prune7,
prunt7,
punto7,
puton7,
repot7,
toper7,
troop7,
trope7,
upter7,
noter5,
outer5,
outre5,
outro5,
roneo5,
ronte5,
roton5,
rouen5,
route5,
tenor5,
toner5,
trone5,
tuner5,
urent5,
4 letter words:
oppo8,
pepo8,
perp8,
poep8,
poop8,
pope8,
prep8,
prop8,
repp8,
noop6,
nope6,
noup6,
open6,
pent6,
peon6,
pern6,
pert6,
poet6,
pone6,
pont6,
poon6,
poor6,
poot6,
pore6,
porn6,
port6,
pote6,
pour6,
pout6,
proo6,
puer6,
punt6,
pure6,
repo6,
roop6,
rope6,
roup6,
tope6,
topo6,
trop6,
upon6,
euro4,
note4,
nout4,
oner4,
onto4,
oont4,
ourn4,
rent4,
rone4,
ront4,
roon4,
root4,
rote4,
roto4,
roue4,
rout4,
rune4,
runt4,
tern4,
tone4,
toon4,
tore4,
torn4,
toro4,
toun4,
tour4,
tron4,
true4,
tune4,
turn4,
unto4,
3 letter words:
pep7,
pop7,
pup7,
nep5,
oop5,
ope5,
opt5,
oup5,
pen5,
per5,
pet5,
poo5,
pot5,
pre5,
pro5,
pun5,
pur5,
put5,
rep5,
top5,
tup5,
upo5,
urp5,
eon3,
ern3,
net3,
noo3,
nor3,
not3,
nur3,
nut3,
one3,
ono3,
oon3,
oor3,
oot3,
ore3,
ort3,
our3,
out3,
ren3,
reo3,
ret3,
roe3,
roo3,
rot3,
rue3,
run3,
rut3,
ten3,
toe3,
ton3,
too3,
tor3,
tun3,
ure3,
urn3,
ute3,
2 letter words:
op4,
pe4,
po4,
up4,
en2,
er2,
et2,
ne2,
no2,
nu2,
oe2,
on2,
oo2,
or2,
ou2,
re2,
te2,
to2,
un2,
ur2,
ut2,