If "learned" refers to knowledge acquired through study:
* Ignorant: Lacking knowledge or understanding.
* Uneducated: Not having received formal education.
* Uninformed: Not having knowledge about a particular subject.
* Naive: Lacking experience or knowledge of the world.
If "learned" refers to a skill developed through practice:
* Unskilled: Lacking in ability or proficiency.
* Unpracticed: Not having developed a skill through practice.
* Amateur: Not having professional experience in a skill.
If "learned" refers to something that has been taught:
* Unlearned: Not having been taught or acquired.
* Untaught: Not having been instructed in a particular subject.
* Natural: Existing without being taught or learned.
It's important to consider the specific meaning of "learned" in the context of your sentence to determine the most accurate opposite word.