9 letter words:
poisonous11,
7 letter words:
niobous9,
poisons9,
spinous9,
6 letter words:
bisons8,
bosons8,
bosuns8,
opsins8,
poison8,
snoops8,
spoons8,
5 letter words:
pubis9,
bison7,
bonus7,
boons7,
boson7,
bosun7,
opsin7,
pions7,
pious7,
pisos7,
poons7,
snibs7,
snips7,
snobs7,
snoop7,
snubs7,
soups7,
spins7,
spoon7,
nisus5,
sinus5,
4 letter words:
bops8,
pubs8,
bins6,
bios6,
boon6,
boos6,
boss6,
buns6,
buss6,
nibs6,
nips6,
nobs6,
nubs6,
obis6,
oops6,
opus6,
pins6,
pion6,
piso6,
piss6,
pois6,
pons6,
poon6,
poos6,
psis6,
puns6,
puss6,
sibs6,
sips6,
snib6,
snip6,
snob6,
snub6,
sobs6,
sops6,
soup6,
spin6,
spun6,
subs6,
sups6,
upon6,
ions4,
nous4,
onos4,
onus4,
sins4,
sons4,
soon4,
sous4,
suns4,
3 letter words:
bop7,
pub7,
bin5,
bio5,
bis5,
boo5,
bos5,
bun5,
bus5,
nib5,
nip5,
nob5,
nub5,
obi5,
ops5,
pin5,
pis5,
piu5,
poi5,
poo5,
psi5,
pun5,
pus5,
sib5,
sip5,
sob5,
sop5,
sub5,
sup5,
upo5,
ups5,
ins3,
ion3,
noo3,
nos3,
nus3,
ono3,
ons3,
sin3,
sis3,
son3,
sos3,
sou3,
sun3,
uns3,
2 letter words:
bi4,
bo4,
op4,
pi4,
up4,
in2,
is2,
no2,
nu2,
oi2,
on2,
os2,
si2,
so2,
un2,
us2,