IPA: /ɪnˈkeɪpəˌbɪlɪti/
KK: /ɪnˈkeɪpəˌbɪlɪti/
The state of not being able to do something or lacking the ability to perform a task.
His incapability to solve the problem frustrated his team.
Incapability → It is formed from "in-" (meaning not) and "capability" (from Latin "capax" meaning able or capable, combined with the suffix "-ity" meaning the state of). The word "incapability" refers to the state of being not able or lacking the ability to do something.
Think of 'not' ('in-') being combined with 'able' ('capax') to remember that 'incapability' means the state of not being able.