7 letter words:
actinia9,
5 letter words:
acini7,
actin7,
antic7,
4 letter words:
acta6,
cain6,
cant6,
anta4,
anti4,
inia4,
inti4,
tain4,
3 letter words:
act5,
can5,
cat5,
tic5,
ain3,
ait3,
ana3,
ani3,
ant3,
nit3,
tan3,
tin3,
2 letter words:
aa2,
ai2,
an2,
at2,
in2,
it2,
na2,
ta2,
ti2,