<p><strong>Verb</strong></p><ul><li>(used without object) to make a choice; choose (usually followed by "for")</li><li>to decide to make use of or take part in something: To receive automatic updates, opt in under the email notification section.</li><li>to decide to withdraw from or not take part in something: You can opt out of the pension plan, but you lose the employer and government contribution.</li></ul><p><strong>Synonyms</strong></p><ul><li>elect</li><li>pick</li><li>select</li></ul>