<p><strong>Adjective</strong></p><ul><li>not a member of or trained in a specific profession.</li><li>Sports: not offering or engaged in for payment or a monetary prize; amateur: a nonprofessional league; a nonprofessional player.</li></ul><p><strong>Noun</strong></p><ul><li>a person who is not a professional.</li><li>an amateur athlete.</li></ul>