(ˈ)in, ən+ noun
Etymology: French incompétence, from Middle French, from in- in- (I) + compétence — more at competence
: the state or fact of being incompetent: as
a. : lack of physical, intellectual, or moral ability : insufficiency , inadequacy
his incompetence was absolute
b. : lack of legal qualification or fitness
the incompetence of an intoxicated man to drive an automobile
c. : the inability of an organ to perform its function adequately
aortic incompetence may lead to enlargement of the heart