incompetency

/ɪn'kɒmpɪtənsɪ/ 120

lack of physical or intellectual ability or qualifications

I have suffered a martyrdom from their incompetency and caprice.
他们的无能和任性折磨得我够受了.

单词造句:

关联词incompetent/ɪnˈkɒmpɪtənt/adj. 无能力的，不胜任的；不合适的；不适当的；无力的