Longman Dictionary of Contemporary English
Douglas Harper's Etymology Dictionary
also nonviolent, 1896, from non- + violent. From 1920 in reference to "principle or practice of abstaining from violence," in writings of M.K. Gandhi. \n\nIt is better to be violent, if there is violence in our hearts, than to put on the cloak of non-violence to cover impotence.
[Gandhi, "Non-violence in Peace and War," 1948]
Wiktionary
a. 1 (Of a deed, event etc.) Without violence. 2 (Of a person or movement) opposed to violence. 3 (Of a convict) sentenced for a crime that did not involve violence. alt. 1 (Of a deed, event etc.) Without violence. 2 (Of a person or movement) opposed to violence. 3 (Of a convict) sentenced for a crime that did not involve violence.
Usage examples of "non-violent".
If they were to make an initial non-violent contact with the Dyson aliens, I would expect them to make some attempt to communicate and build up a rapport.
At one moment his "moral support" is with the Allies, at another it is withdrawn, at one moment he thinks it best to come to terms with the Japanese, at another he wishes to oppose them by non-violent means -- at the cost, he thinks, of several million lives -- at another he urges Britain to give battle in the West and leave India to be invaded, at another he "has no wish to harm the Allied cause" and declares that he does not want the Allied troops to leave India.