What are the opposite words for adequacy?

Adequacy refers to something that is sufficient, acceptable or appropriate for a particular purpose. However, in our daily lives, we encounter situations where adequacy falls short, and we need to push for excellence. That's where antonyms for adequacy come in. Antonyms for adequacy include words such as insufficiency, inefficiency, incapability, incompetence, and ineffectiveness. Insufficiency suggests a lack of essential resources, while inefficiency implies that a task cannot be effectively completed. Incapability relates to the inability to perform a particular task or achieve an objective, whereas incompetence describes a lack of skill or ability. Finally, ineffectiveness is a comprehensive term that suggests the absence of the desired result or outcome.