incompetent
/ɪnˈkɑmpɪtənt/
adjective
- Not having the necessary skill, knowledge, or ability to do something successfully.
- She felt incompetent when she couldn't answer the simple math question.
- The court ruled that the doctor was incompetent and should lose his license.
- The incompetent plumber left the pipes leaking even worse than before.
noun
- A person who lacks the necessary skill or ability to do a job or task.
- The team was full of incompetents who couldn't meet a single deadline.
- The manager hired a series of incompetents before finally finding a good worker.
- He was dismissed as a hopeless incompetent after losing the client's account.