The word "un discerning" means someone who lacks the ability to judge or understand things accurately. Antonyms for this word could be "discerning," meaning someone who is able to make accurate judgments and understands things well. Other antonyms for "un discerning" could include words like "knowledgeable," "intelligent," "perceptive," "insightful," and "wise." These words all suggest a person who is able to distinguish between things and draw informed conclusions. While "un discerning" implies negativity, its antonyms evoke positive qualities that are valuable in many contexts, from business to relationships.