Meaning of “inadequacy” - Learner’s Dictionary

inadequacy

noun uk us /ɪˈnædɪkwəsi/
QUALITY [ C, U ]

the quality of not being good enough or not being of a high enough quality:

feelings of inadequacy
He pointed out several inadequacies in the present system.
AMOUNT [ U ]

the quality of not being enough:

The basic problem is the inadequacy of our school budget.

(Definition of “inadequacy” from the Cambridge Learner’s Dictionary © Cambridge University Press)