9 letter words:
semistiff17,
8 letter words:
miffiest16,
stiffies14,
7 letter words:
fifties13,
iffiest13,
stiffie13,
misfits12,
semifit12,
mitises9,
stimies9,
6 letter words:
stiffs12,
misfit11,
feists9,
misset8,
smites8,
stimes8,
tmesis8,
5 letter words:
miffs13,
fiefs11,
fifes11,
stiff11,
teffs11,
tiffs11,
feist8,
fests8,
fists8,
seifs8,
sifts8,
emits7,
items7,
metis7,
mises7,
mists7,
mites7,
mitis7,
seism7,
semis7,
smite7,
stems7,
stime7,
times7,
issei5,
sites5,
sties5,
4 letter words:
miff12,
effs10,
fief10,
fife10,
teff10,
tiff10,
fems9,
efts7,
fess7,
fest7,
fets7,
fist7,
fits7,
seif7,
sift7,
emit6,
isms6,
item6,
mess6,
mise6,
miss6,
mist6,
mite6,
semi6,
sims6,
smit6,
stem6,
time6,
seis4,
sets4,
site4,
sits4,
ties4,
3 letter words:
eff9,
iff9,
fem8,
efs6,
eft6,
fes6,
fet6,
fie6,
fit6,
ifs6,
ems5,
ism5,
met5,
mis5,
sim5,
ess3,
its3,
sei3,
set3,
sis3,
sit3,
tie3,
tis3,
2 letter words:
ef5,
fe5,
if5,
em4,
me4,
mi4,
es2,
et2,
is2,
it2,
si2,
ti2,