Soft : easy to mould, cut, compress, or fold, not hard or firm to the touch, soft, bland, malleable, moderate, tender, flaccidFriendly : kind and pleasant.Unwise : (of a person or action) not wise or sensible, foolish.Malevolent : having or showing a wish to do evil to others.Benign : gentle and kind.Appropriate antonym of Benign is Malevolent.