9 letter words:
stuffiest15,
8 letter words:
stiffest14,
fustiest11,
7 letter words:
tuffets13,
6 letter words:
stiffs12,
stuffs12,
tuffet12,
feists9,
suites6,
testis6,
tissue6,
5 letter words:
fiefs11,
fifes11,
stiff11,
stuff11,
teffs11,
tiffs11,
tuffs11,
feist8,
fests8,
fetus8,
fists8,
fuses8,
seifs8,
sifts8,
tufts8,
etuis5,
issue5,
setts5,
sites5,
situs5,
stets5,
sties5,
suets5,
suite5,
suits5,
tests5,
4 letter words:
effs10,
fief10,
fife10,
teff10,
tiff10,
tuff10,
efts7,
fess7,
fest7,
fets7,
feus7,
fist7,
fits7,
fuse7,
fuss7,
seif7,
sift7,
tuft7,
etui4,
seis4,
sets4,
sett4,
site4,
sits4,
stet4,
sues4,
suet4,
suit4,
test4,
tets4,
ties4,
tits4,
tuis4,
tuts4,
uses4,
utes4,
3 letter words:
eff9,
iff9,
efs6,
eft6,
fes6,
fet6,
feu6,
fie6,
fit6,
ifs6,
ess3,
its3,
sei3,
set3,
sis3,
sit3,
sue3,
tet3,
tie3,
tis3,
tit3,
tui3,
tut3,
use3,
ute3,
uts3,
2 letter words:
ef5,
fe5,
if5,
es2,
et2,
is2,
it2,
si2,
ti2,
us2,
ut2,