Unpolluted (adjective)

Not contaminated with harmful substances.

Origin:

The word "unpolluted" is formed by the prefix "un-" which means not, and the word "polluted" which means contaminated with harmful substances. together they form an adjective that means not contaminated with harmful substances.

Examples:

1. The air in the mountains was unpolluted, it was fresh and clean.
2. The water in the lake was unpolluted, it was safe to drink.
3. The soil in the field was unpolluted, it was suitable for farming.
4. The environment was unpolluted, it was healthy and natural.
5. The beach was unpolluted, it was clean and safe for swimming.