Undesigning is a related term of unsophisticated.
As adjectives the difference between undesigning and unsophisticated
is that undesigning is having no artful, ulterior, or fraudulent purpose; sincere; artless; simple while unsophisticated is not sophisticated; lacking sophistication.
undesigning
English
Adjective
(
en adjective)
Having no artful, ulterior, or fraudulent purpose; sincere; artless; simple.