<p><strong>Adjective</strong></p><ul><li>adequate for the purpose; enough: sufficient proof; sufficient protection</li><li>Antonyms: inadequate, scant, meager</li></ul><p><strong>Logic</strong></p><ul><li>(of a condition) such that its existence leads to the occurrence of a given event or the existence of a given thing. Compare necessary.</li><li>Archaic: competent</li></ul>