taint [tainted, tainting, taints](To contaminate or corrupt something with an external agent, either physically or morally) verb [UK: teɪnt] [US: ˈteɪnt]
skaziť sa verb {Plf}
spoil [spoilt, spoilt, spoiling, spoils](become sour or rancid, to decay) verb [UK: spɔɪl] [US: ˌspɔɪl]