obliquity obliquity /oʊˈbliːkwiti/

noun

1. The quality of being deceptive  ( deceptiveness , obliquity )
   the quality of being deceptive
   
2. The presentation during labor of the head of the fetus at an abnormal angle  ( asynclitism , obliquity )
   the presentation during labor of the head of the fetus at an abnormal angle