The antonyms for the phrase "most right-thinking" can be subjective and open to interpretation. However, some possible antonyms could include "close-minded," "bigoted," "narrow-minded," "conservative," "reactionary," or "prejudiced." These words denote a rigid and inflexible mindset that lacks openness or intellectual curiosity. On the other hand, the phrase "most right-thinking" suggests an approach that is balanced, thoughtful, and open to new ideas. It implies a willingness to listen and evaluate competing perspectives before arriving at a well-informed opinion. Understanding the antonyms of a word can help to expand one's vocabulary and deepen their understanding of language conventions.