Uninformed (adjective)

Not having knowledge or information about a particular subject.

Origin:

The word "uninformed" is derived from the prefix "un-" meaning "not" or "reverse of" and "informed" which means having knowledge or information about a particular subject.

Examples:

1. He made a decision without being fully informed.
2. She felt uninformed about the current political situation.
3. The public was uninformed about the true cost of the project.
4. I am uninformed about the latest developments in the field.
5. The audience was uninformed about the background of the story.