Sentence:  It is not a medieval mental quirk or an attitude `` unnourished by sense '' to believe that husbands and wives should not be subjected to such a risk , or that such a possibility should not be <WSD>permitted</WSD> to endanger the confidentiality of the marriage relationship . 
Meaning of the word marked with <WSD> tags:  make it possible through a specific action or lack of action for something to happen