benign /bɪˈnaɪn/ adjective Learner's definition of BENIGN
1 medical
a : not causing death or serious injury非致命的 b : without cancer : not cancerous良性的;不会发生癌变的 — opposite malignant 2
: not causing harm or damage无害的;不会造成伤害的 3
[more benign; most benign] : mild and pleasant温和的;宜人的 4
[more benign; most benign] : gentle and kind慈祥的;和蔼的;亲切的 5
[more benign; most benign] : having or showing a belief that nothing bad will happen认为无关紧要的;看好的