Definition of "mischievous"

...; that good and bad actions at present are naturally rewarded and punished, not only as beneficial and mischievous to society, but also as virtuous and civious; ...

1793, Joseph Butler, The Analogy of Religion

On the whole, therefore, he concludes that the point of indulgence at which these self-passions or self-affections begin to be mischievous to the individual coincides with that at which they begin to be mischievous to society; ...

1892, Henry Sidgwick, Outlines of the History of Ethics