in·qui·nate \ˈinkwəˌnāt\transitive verb (-ed/-ing/-s) Etymology: Latin inquinatus, past participle of inquinare, from in- in- (II) + -quinare (akin to Latin caenum filth, ordure) — more at obscene : defile, corrupt • in·qui·na·tion\ˌ ̷ ̷ ̷ ̷ˈnāshən\noun-s