The antonyms for the word "more unoppressive" include terms like oppressive, burdensome, heavy, and overbearing. These antonyms represent the opposite of a state of being unoppressive, indicating a situation where someone or something is enforcing its dominance over others. Oppression, in this sense, can take many forms, such as economic, social, or political coercion. Burdensome means something that is difficult to deal with, while heavy might denote something that is taxing or arduous. Lastly, overbearing suggests someone who is excessively controlling or domineering. Therefore, in considering antonyms for the word "more unoppressive," we find a range of expressions that relate to negative situations or characteristics that are the opposite of the original term.