<p><strong>Verb</strong></p><ul><li>(used with object) to make complex, intricate, involved, or difficult:<ul><li>His recovery from the operation was complicated by an allergic reaction.</li></ul></li></ul><p><strong>Adjective</strong></p><ul><li>complex; involved.</li><li>Entomology: folded longitudinally one or more times, as the wings of certain insects.</li></ul>