As adjectives the difference between unflattened and unfattened
is that unflattened is not flattened while unfattened is not fattened.
As a verb unflattened
is (unflatten).
unflattened
English
Verb
(head)
(unflatten)
Adjective
(-)
Not flattened. unflatten
English
Verb
(
en verb)
To restore (something flattened) to its previous form.