Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
intāmĭnātus, a, um, adj. [2. in-tamino; whence contamino], unsullied, undefiled: virtus Intaminatis fulget honoribus, Hor. C. 3, 2, 18; Tert. Cor. Milit. 15 init.