<p><strong>Adjective</strong></p><ul><li>Not professional; not pertaining to or characteristic of a profession.</li><li>At variance with or contrary to professional standards or ethics; not befitting members of a profession, as language, behavior, or conduct.</li><li>Not belonging to a profession; nonprofessional.</li><li>Not done with professional competence, as a play staged or an opera performed by amateurs; amateurish.</li><li>Nonprofessional (def 2).</li></ul><p><strong>Noun</strong></p><ul><li>A person who is not a professional; amateur.</li></ul>