The antonyms for "person's full intent purpose" vary depending on the context. Some antonyms could include indecisiveness, ambiguity, hesitation, uncertainty, vagueness or wavering. These words suggest a lack of clarity or direction in someone's goals or motives. Other antonyms could include aimlessness, disinterest, apathy, or neglect, which indicate a lack of desire or drive towards achieving a specific goal. Regardless of the antonym used, it is clear that without a clear intent or purpose, an individual's actions may lack direction, focus, and ultimately fall short of achieving their desired outcome.