noun
ineptitude
in-EP-ti-tood/ɪˈneptɪtuːd/
Lack of skill or ability to do something well.
The novice's ineptitude leaves one stool leg attached upside down.

Etymology
The ending turns “not suitable” into a named quality. Originally covering unfitness and foolishness, ineptitude describes the lack of ability that makes someone poorly suited to a task.
In context
that is called ineptitude when we learn that government Labs have been shipping live Anthrax around for 10 years
More examples
- Her technical ineptitude makes setting up a printer frustrating.
- The report exposes the management's ineptitude in handling complaints.
- He laughs at his own ineptitude in the kitchen.
Forms
ineptitude
inept adjective — Lacking the skill to perform well.
Similar words
- incompetence
- Emphasizes failure to meet the basic requirements of a task.
- clumsiness
- Focuses on awkward movement or handling rather than overall ability.