8 letter words:
unmuffle16,
6 letter words:
muffle14,
5 letter words:
flume10,
lumen7,
4 letter words:
meff12,
muff12,
luff10,
nuff10,
fume9,
enuf7,
flue7,
fuel7,
menu6,
mule6,
neum6,
lune4,
3 letter words:
eff9,
fem8,
fum8,
elf6,
fen6,
feu6,
flu6,
fun6,
nef6,
elm5,
emu5,
lum5,
mel5,
men5,
meu5,
mun5,
umu5,
leu3,
ule3,
ulu3,
2 letter words:
ef5,
fe5,
em4,
me4,
mu4,
um4,
el2,
en2,
ne2,
nu2,
un2,