1. not handled, moved, or affected by someone or something
2. not eaten or consumed
3. not emotionally moved or influenced

Examples

• The ancient ruins remained untouched by modern development.
• Her dinner sat untouched on the plate.
• He seemed untouched by the tragic news.
• The forest was completely untouched by human activity.
• The evidence was left untouched at the crime scene.
• She was untouched by his attempts at flattery.
• The wilderness area has remained untouched for centuries.