Antonyms for the phrase "was violent" can include "was peaceful," "was calm," "was gentle," and "was nonviolent." Instead of exhibiting violent behavior, one can display a calm demeanor, speak in a gentle tone, and embrace nonviolent communication. These antonyms serve as alternatives to aggression, hostility, and physically harmful actions. In situations where conflict arises, one can choose to employ techniques such as active listening, empathy, and compromise to reduce the likelihood of violence. It is essential to understand and utilize antonyms for the phrase "was violent" to promote a peaceful and harmonious society.