Amateur
Part of speech: adjective
Definition: Non-professional. Created, done, or populated by amateurs or non-professionals. Showing a lack of professionalism, experience or talent.
Part of speech: noun
Definition: A lover of something. A person attached to a particular pursuit, study, or science as to music or painting; esp. one who cultivates any study or art, from taste or attachment, without pursuing it professionally. Someone who is unqualified or insufficiently skillful.
Example sentence: Your performance depends on your people. Select the best, train them and back them. When errors occur, give sharper guidance. If errors persist or if the fit feels wrong, help them move on. The country cannot afford amateur hour in the White House.
Unprofessional
Part of speech: adjective
Definition: Not professional; amateur.Inappropriate in the workplace; unbecoming a professional.