Main entry: uncontaminated
Definition: not corrupted by contact or association
Usage: there is no culture uncontaminated by contact with the outside world
Antonyms: contaminated
Definition: corrupted by contact or association
Main entry: uncontaminated, unpolluted
Definition: free from admixture with noxious elements; clean
Usage: unpolluted streams; a contaminated lake
Antonyms: impure
Definition: (used of persons or behaviors) immoral or obscene
Antonyms: impure
Definition: combined with extraneous elements