adj. 25B6; adjective
a benign grandfatherly role : KINDLY, kind, warm-hearted, good-natured, friendly, warm, affectionate, agreeable, genial, congenial, cordial, approachable, tender-hearted, gentle, sympathetic, compassionate, caring, well disposed, benevolent.
a benign climate : TEMPERATE, mild, gentle, balmy, soft, pleasant; healthy, wholesome, salubrious.
(Medicine) a benign tumour : HARMLESS, non-malignant, non-cancerous, innocent; Medicine benignant.
unfriendly, hostile, unhealthy, unfavourable, malignant.