infect [infected, infecting, infects](to bring into contact with a substance that causes illness) verb [UK: ɪn.ˈfekt] [US: ˌɪn.ˈfekt]Is John infected? = John è infetto?
taint [tainted, tainting, taints](To contaminate or corrupt something with an external agent, either physically or morally) verb [UK: teɪnt] [US: ˈteɪnt]