"benigner" in the adjective sense
1. benign
not dangerous to health not recurrent or progressive (especially of a tumor)
2. benign, benignant
pleasant and beneficial in nature or influence
"a benign smile"
"the benign sky"
"the benign influence of pure air"
3. benign
kindness of disposition or manner
"the benign ruler of millions"
"benign intentions"
Source: WordNet® (An amazing lexical database of English)
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