Decontaminate rhymes with:
contaminate, contaminate, contaminate, contaminate, contaminate, contaminate, denominate, determinate, discriminate, disseminate, dominate, eliminate, emanate, exterminate, fulminate, germinate, incriminate, inseminate, predominate, terminate
Decontaminate sounds like:
decontaminated, descendant, descendent, discontent, discontented, discontinued, discontinuity