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1. Having a kind and gentle disposition or appearance.

2. Not a threat to life or long-term health, especially by being noncancerous.

3. Neutral or harmless in its effect or influence.

4. Mild or favorable in effect.

1. The lady next door is a relavively benign presence.
2. The cancer's benign.
3. The storm was benign.
by Jafje September 11, 2007
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verb. the age one becomes after eight.
joe will benign after his birthday next week.
by mark86 May 19, 2005
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