in‧ad‧e‧qua‧cy plural inadequacies
a feeling that you are not as good, clever, skilled etc as other people:
Unemployment can cause feelings of inadequacy and low self-esteem.
the fact of not being good enough in quality, ability, size etc for a particular purpose
the inadequacy of local health care
3 [countable usually plural]
a fault or weakness:
I'm quite aware of my own inadequacies.