10 letter words:
ovipositor15,
8 letter words:
oviposit13,
7 letter words:
proviso12,
provost12,
visitor10,
6 letter words:
pivots11,
pooris8,
prosit8,
ripost8,
spirit8,
tripos8,
troops8,
5 letter words:
pivot10,
visit8,
visor8,
poori7,
ports7,
posit7,
proso7,
prost7,
sopor7,
spirt7,
spoor7,
sport7,
sprit7,
stirp7,
stoop7,
strip7,
strop7,
tipis7,
topis7,
topoi7,
topos7,
trips7,
troop7,
riots5,
roost5,
roots5,
rotis5,
rotos5,
tiros5,
torii5,
toros5,
torsi5,
torso5,
trios5,
trois5,
4 letter words:
spiv9,
oops6,
opts6,
piso6,
pits6,
pois6,
poor6,
poos6,
port6,
post6,
pots6,
pros6,
rips6,
spit6,
spot6,
stop6,
tipi6,
tips6,
topi6,
topo6,
tops6,
trip6,
trop6,
iris4,
oots4,
orts4,
riot4,
root4,
roti4,
roto4,
rots4,
soot4,
sori4,
sort4,
stir4,
tiro4,
tori4,
toro4,
tors4,
trio4,
3 letter words:
vis6,
ops5,
opt5,
pis5,
pit5,
poi5,
poo5,
pot5,
pro5,
psi5,
pst5,
rip5,
sip5,
sop5,
tip5,
top5,
its3,
oot3,
ors3,
ort3,
rot3,
sir3,
sit3,
sot3,
sri3,
tis3,
too3,
tor3,
2 letter words:
op4,
pi4,
is2,
it2,
oi2,
or2,
os2,
si2,
so2,
ti2,
to2,