<p><strong>Noun</strong></p><ul><li>transgression of divine law: the sin of Adam.</li><li>any act regarded as such a transgression, especially a willful or deliberate violation of some religious or moral principle.</li><li>great fault or offense: It's a sin to waste time.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>sinned, sin·ning: to commit a sinful act.</li><li>to offend against a principle, standard, etc.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>sinned, sin·ning: to commit or perform sinfully: He sinned his crimes without compunction.</li><li>to bring, drive, etc., by sinning: He sinned his soul to perdition.</li></ul>