7 letter words:
poisons9,
poisson9,
6 letter words:
opsins8,
poison8,
psions8,
snoops8,
spoons8,
5 letter words:
noops7,
opsin7,
pions7,
pisos7,
poons7,
psion7,
snips7,
snoop7,
soops7,
spins7,
spoon7,
4 letter words:
nips6,
noop6,
oops6,
pins6,
pion6,
piso6,
piss6,
pois6,
pons6,
poon6,
poos6,
poss6,
psis6,
sips6,
snip6,
soop6,
sops6,
spin6,
ions4,
isos4,
onos4,
oons4,
sins4,
sons4,
soon4,
3 letter words:
nip5,
oop5,
ops5,
pin5,
pis5,
poi5,
poo5,
pos5,
psi5,
sip5,
sop5,
ins3,
ion3,
ios3,
iso3,
nis3,
noo3,
nos3,
ono3,
ons3,
oon3,
oos3,
sin3,
sis3,
son3,
sos3,
2 letter words:
op4,
pi4,
po4,
in2,
io2,
is2,
no2,
oi2,
on2,
oo2,
os2,
si2,
so2,