7 letter words:
antifat10,
infanta10,
infauna10,
6 letter words:
infant9,
attain6,
natant6,
nutant6,
5 letter words:
faint8,
fauna8,
tafia8,
unfit8,
taint5,
taunt5,
titan5,
4 letter words:
fain7,
faun7,
fiat7,
naif7,
tufa7,
tuft7,
anna4,
anta4,
anti4,
aunt4,
naan4,
nana4,
tain4,
taut4,
tint4,
tuna4,
unai4,
unit4,
3 letter words:
aft6,
fan6,
fat6,
fin6,
fit6,
fun6,
ain3,
ait3,
ana3,
ani3,
ant3,
att3,
inn3,
nan3,
nit3,
nun3,
nut3,
tan3,
tat3,
tau3,
tin3,
tit3,
tui3,
tun3,
tut3,
uta3,
2 letter words:
fa5,
if5,
aa2,
ai2,
an2,
at2,
in2,
it2,
na2,
nu2,
ta2,
ti2,
un2,
ut2,