uninformed
adj. B2 Upper Intermediate US //ˌənɪnˈfɔɹmd// UK //ˌʌnɪnfˈɔːmd// un·in·formed
adj. not having enough information or knowledge about a specific subject. You use this to describe someone who does not know the facts before making a decision.
adj. lacking knowledge or information regarding a particular subject or situation. Often used to describe a person's state before receiving new data or instructions.
The uninformed public was surprised by the sudden change in policy.
The committee made a decision based on uninformed assumptions, leading to a major failure in the project's first year.
In an era of rapid information exchange, being uninformed is often a choice rather than a necessity, though it can lead to significant social and economic disadvantages.
From un- + informed.