The antonyms for the word "open-mindedly" are narrow-mindedly, dogmatically, intolerantly, biasedly, stubbornly, and unyieldingly. When people are narrow-minded, they cling to their own beliefs without considering any other opinions or ideas. Dogmatic individuals are those who are convinced that their beliefs are the only ones worth considering, and they refuse to accept different viewpoints. Intolerant people are those who are unwilling to tolerate or accept people who hold different beliefs, religions, or lifestyles. Individuals who are biased are prejudiced, favoring one group over another, and they do not consider alternative perspectives. Stubborn people are inflexible and refuse to change their minds even in the face of overwhelming evidence. Those who are unyielding are uncompromising and refuse to budge from their position.