The antonyms for "setting about" include words like cease, desist, abandon, or quit. These words imply stopping, giving up or leaving a task or project altogether. Other antonyms may include procrastination, delay, or hesitation, referring to a lack of urgency or action. Moreover, antonyms may imply a sense of disinterest or lack of enthusiasm towards a task. Words like ignore or neglect convey the idea of avoiding or refusing to engage in a particular activity. In contrast to setting about, these antonyms indicate a lack of motivation, initiative, or commitment towards a specific goal or objective.