<p><strong>Noun</strong></p><ul><li>a failure or refusal to conform, as with established customs, attitudes, or ideas</li><li>lack of conformity or agreement</li><li>(often initial capital letter) refusal to conform to the Church of England</li><li>Geology: an unconformity that separates crystalline rocks, either igneous or metamorphic, from sedimentary rocks</li></ul><p><strong>Synonyms</strong></p><ul><li>disobedience</li><li>insubordination</li><li>objection</li></ul>