Sentence:  Yet how is the <WSD>unfathering</WSD> related to usurpation? Is the situation as Oedipal as its rhetoric suggests? Oedipus encounters and kills a traveler on the road outside Thebes, and by doing so <WSD>unfathers</WSD> himself. 
Meaning of the word marked with <WSD> tags:  To cause someone to be fatherless.