'Unpolluted' definitions:

Definition of 'unpolluted'

From: WordNet
adjective
Free from admixture with noxious elements; clean; "unpolluted streams"; "a contaminated lake" [syn: uncontaminated, unpolluted]

Definition of 'Unpolluted'

From: GCIDE

Synonyms of 'unpolluted'

From: Moby Thesaurus