9 letter words:
infirmity17,
7 letter words:
nitrify13,
6 letter words:
minify14,
infirm11,
5 letter words:
nifty11,
minty10,
mirin7,
4 letter words:
firm9,
miry9,
mity9,
rimy9,
firn7,
frit7,
rift7,
tiny7,
tyin7,
mini6,
mint6,
miri6,
trim6,
inti4,
3 letter words:
fry9,
fin6,
fir6,
fit6,
rif6,
try6,
yin6,
mir5,
nim5,
rim5,
nit3,
rin3,
tin3,
2 letter words:
my7,
if5,
mi4,
in2,
it2,
ti2,