Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-contāmĭnātus, a, um, adj., uncontaminated, undefiled, pure (class., but not in Cic.): ne quid incontaminati sit, Liv. 4, 2, 5: facies, Varr. R. R. 3, 9, 16.
Sup.: a quibus longe absunt, ut incontaminatissimi perseverent, Aug. Civ. Dei, 9, 16, 1.