9 letter words:
digitoxin18,
7 letter words:
digoxin16,
6 letter words:
dioxin14,
doting8,
indigo8,
tiding8,
5 letter words:
dixit13,
toxin12,
digit7,
dingo7,
doing7,
idiot6,
ingot6,
iodin6,
nitid6,
tigon6,
tondi6,
4 letter words:
oxid12,
ding6,
dong6,
dino5,
dint5,
doit5,
nidi5,
nodi5,
ting5,
tong5,
inti4,
into4,
3 letter words:
gox11,
nix10,
dig5,
dog5,
gid5,
god5,
din4,
dit4,
don4,
dot4,
gin4,
git4,
got4,
nod4,
nog4,
tod4,
tog4,
ion3,
nit3,
not3,
tin3,
ton3,
2 letter words:
ox9,
xi9,
do3,
go3,
id3,
od3,
in2,
it2,
no2,
oi2,
on2,
ti2,
to2,