Unenlightened (adjective)

Not having or showing an understanding of a particular subject or situation.

Origin:

From the prefix un- meaning not and the word enlightened.

Examples:

1. He was unenlightened about the true nature of the problem.
2. She was unenlightened about the political situation in the country.
3. The unenlightened public was not aware of the issue.
4. The unenlightened citizens were not informed about the topic.
5. The unenlightened population was not educated about the matter.