Undeveloped means not yet grown, built up, or brought to its full potential. When something is undeveloped, it exists in a basic or raw state, waiting for growth, work, or improvement.

An undeveloped plot of land sits empty, covered with grass and trees, without houses or roads. A city might have undeveloped areas on its outskirts where nature still dominates. Developers might buy undeveloped land to build neighborhoods or shopping centers.

The word also describes skills and abilities that haven't been practiced or refined. A young violin student has undeveloped musical talent until hours of practice strengthen her fingers and train her ear. A fast runner might have undeveloped endurance because she's never trained for long distances. These undeveloped abilities aren't absent, they just need time, effort, and experience to emerge.

You might also hear about undeveloped film from old cameras, which contains images that won't appear until someone processes it with special chemicals. Similarly, an undeveloped idea in your mind might be interesting but still fuzzy and incomplete, needing more thought before it's ready to share.

The opposite of undeveloped is developed: built up, refined, and brought to its full state through effort or progress.