<p><strong>Adjective</strong></p><ul><li>persisting, especially in spite of opposition, obstacles, discouragement, etc.; persevering: a most annoyingly persistent young man.</li></ul><p><strong>Synonyms</strong></p><ul><li>tenacious</li><li>pertinacious</li><li>indefatigable</li></ul><p><strong>Examples</strong></p><ul><li>the persistent aroma of verbena; a persistent cough.</li><li>constantly repeated; continued: persistent noise.</li></ul><p><strong>Synonyms</strong></p><ul><li>steady</li><li>constant</li></ul><p><strong>Antonyms</strong></p><ul><li>sporadic</li></ul><p><strong>Biology</strong></p><ul><li>continuing or permanent.</li><li>having continuity of phylogenetic characteristics.</li></ul><p><strong>Botany</strong></p><ul><li>remaining attached beyond the usual time, as flowers, flower parts, or leaves.</li></ul>