8 letter words:
dandruff16,
5 letter words:
draff12,
fraud9,
furan8,
4 letter words:
daff11,
duff11,
naff10,
raff10,
ruff10,
fard8,
fund8,
faun7,
duad6,
rudd6,
darn5,
dura5,
durn5,
nard5,
nurd5,
rand5,
3 letter words:
aff9,
fad7,
fud7,
arf6,
fan6,
far6,
fun6,
fur6,
add5,
dad5,
dud5,
and4,
dan4,
dun4,
rad4,
urd4,
ran3,
run3,
urn3,
2 letter words:
fa5,
ad3,
an2,
ar2,
na2,
nu2,
un2,