6 letter words:
fiends10,
5 letter words:
defis9,
fends9,
fiend9,
finds9,
fined9,
fines8,
neifs8,
dines6,
nides6,
snide6,
4 letter words:
defi8,
difs8,
feds8,
fend8,
fids8,
find8,
fens7,
fine7,
fins7,
neif7,
seif7,
deni5,
dens5,
dies5,
dine5,
dins5,
ends5,
ides5,
nide5,
send5,
side5,
sned5,
sine4,
3 letter words:
def7,
dif7,
fed7,
fid7,
efs6,
fen6,
fes6,
fie6,
fin6,
ifs6,
den4,
die4,
din4,
dis4,
eds4,
end4,
ids4,
ens3,
ins3,
sei3,
sen3,
sin3,
2 letter words:
ef5,
fe5,
if5,
de3,
ed3,
id3,
en2,
es2,
in2,
is2,
ne2,
si2,
