Most nubilous refers to something that is cloudy or misty. The antonym for this word would be something that is clear or bright. Some possible antonyms for most nubilous could be sunny, clear, crisp, sharp, or lucid. These words all convey a sense of clarity, lightness, and brightness that is opposite to the hazy, foggy atmosphere evoked by most nubilous. Antonyms can help us better understand a word's meaning by giving us a contrasting term or image to compare it to. By exploring the antonyms for most nubilous, we can gain a better appreciation for the richness and complexity of the English language.