<p><strong>Adjective</strong></p><ul><li>Pathology.</li><li>not malignant; self-limiting: a benign brain tumor.</li><li>having no harmful influence or effect: ecologically benign and sustainable building materials.</li><li>having a kindly disposition; gracious: a benign king.</li><li>Synonyms: compassionate, gentle, humane, tender, benevolent, benignant, kindly, good.</li><li>showing or expressive of gentleness or kindness: a benign smile.</li><li>favorable; propitious: a series of benign omens and configurations in the heavens.</li><li>Antonyms: sinister.</li><li>(of weather) pleasant or beneficial; salubrious; healthful.</li></ul>