<p><strong>Adjective</strong></p><ul><li>happening or likely to happen in an unplanned or subordinate conjunction with something else.</li><li>incurred casually and in addition to the regular or main amount: incidental expenses.</li><li>likely to happen or naturally appertaining (usually followed by to).</li></ul><p><strong>Noun</strong></p><ul><li>something incidental, as a circumstance.</li><li>incidentals, minor expenses.</li></ul><p><strong>End of Response</strong></p>