An incompetent person is someone who lacks the necessary skills, knowledge, or ability to perform a task or job effectively. Synonyms for an incompetent person may include inept, unskilled, incapable, incompetent, amateurish, unsuitable, inexperienced, inadequate, bungling, unqualified, untrained, and inefficient. It is important to note that using derogatory terms to describe someone's abilities can be hurtful and disrespectful. It is best to focus on constructive feedback and providing opportunities for growth and development instead of solely criticizing someone's shortcomings. Ultimately, we all have strengths and weaknesses, and it is our job to learn and improve on our weaknesses.