The phrase "most blackened" can be described as a state of utmost darkness or sootiness. Some antonyms that can be used to counterbalance this term include adjectives like "bright," "sparkling," "shimmering," and "radiant." These words are used to describe things that are full of light, lustrous, and pristine. Other antonyms that can be used to describe the opposite of "most blackened" are words like "clean," "clear," and "pure," which represent a state of spotlessness and cleanliness. Thus, using antonyms helps to create contrast, provides balance to language, and better describes the diverse range of qualities that exist in the world.