9 letter words:
muffineer17,
7 letter words:
firemen12,
6 letter words:
muffin14,
niffer12,
frenum11,
fumier11,
ferine9,
refine9,
unfree9,
ermine8,
murein8,
murine8,
5 letter words:
fifer11,
ruffe11,
femur10,
fermi10,
fumer10,
finer8,
infer8,
miner7,
neume7,
rumen7,
enure5,
inure5,
urine5,
4 letter words:
miff12,
muff12,
fief10,
fife10,
riff10,
ruff10,
feme9,
firm9,
fume9,
enuf7,
fere7,
fern7,
fine7,
fire7,
firn7,
free7,
neif7,
reef7,
reif7,
rife7,
emeu6,
emir6,
menu6,
mere6,
mien6,
mine6,
mire6,
muni6,
mure6,
neem6,
neum6,
rime6,
erne4,
rein4,
ruin4,
rune4,
3 letter words:
eff9,
iff9,
fem8,
fee6,
fen6,
fer6,
feu6,
fie6,
fin6,
fir6,
fun6,
fur6,
ref6,
rif6,
eme5,
emu5,
men5,
mir5,
mun5,
nim5,
rem5,
rim5,
rum5,
ere3,
ern3,
ire3,
nee3,
ree3,
rei3,
rin3,
rue3,
run3,
urn3,
2 letter words:
ef5,
fe5,
if5,
em4,
me4,
mi4,
mu4,
um4,
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,