The phrase "does not do something of one's own volition" refers to actions that are taken unwillingly or unwillingly. Antonyms for this phrase can include "chooses to do something," "embraces a decision," or "acts voluntarily." When we engage in actions of our own volition, we exercise our own free will and take responsibility for our choices. By contrast, when we are forced to do something, we may feel resentful or powerless. Antonyms for the phrase, therefore, suggest active and empowered decision-making, and imply a sense of agency and self-determination. In sum, antonyms for "does not do something of one's own volition" capture a sense of autonomy, choice, and control.