The word "imposturous" means deceitful or fraudulent. Some possible antonyms for this word might include words such as truthful, honest, sincere, authentic, or genuine. Alternatively, one might consider antonyms such as upright, honorable, ethical, or moral. These words represent qualities and characteristics that are the opposite of those associated with imposturous behavior. Whereas imposturous actions are rooted in deception and falsehood, the antonyms for this word are focused on integrity, transparency, and adherence to ethical and moral standards. By considering these antonyms, we can gain a better understanding of what it means to act with honesty and integrity, and how to recognize and avoid imposturous behavior.