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comparative more uncontaminated, superlative most uncontaminated
Not contaminated; unpolluted. quotations examples
These people, it may be noted, belong to a primitive race, uncontaminated by contact with white races, and practically still in the Stone Age.
1927, Havelock Ellis, Studies in the Psychology of Sex, Volume 2 (of 6)
simple past and past participle of uncontaminate examples