WordWeb Online

1. Kindness of disposition or manner
   "the benign ruler of millions"; "benign intentions"
    
2. (pathology) not dangerous to health; not recurrent or progressive (especially of a tumour)
    
3. Pleasant and beneficial in nature or influence
   "the benign sky"; "a benign smile";
   - benignant

See also: benignancy, benignity, graciousness, harmless, kind, kindly

Antonym: malignant

Encyclopedia: Benign