The antonyms for the term "dumb act" would include words such as intelligent, wise, clever, knowledgeable, astute, and sharp. These are all terms that describe actions or behaviors that are characterized by intelligence, comprehension, and quick thinking. In contrast to a "dumb act," these actions are well thought out and well-reasoned, resulting in a positive outcome. To be intelligent is to possess a high level of mental acuity and analytical skills, which can be applied to a wide range of tasks and situations. Therefore, instead of engaging in a "dumb act," one should strive to exhibit intelligence and astuteness to achieve their goals.