Definition of the word clear up

The phrase "clear up" has been part of the English language for several centuries. Its origin can be traced back to the Middle English era, where it was written as "clareen" or "clarenen." The word "clear" in "clear up" means "to make free from confusion, ambiguity, or doubt" or "to make pure or free from impurities." Originally, the word "up" in "clear up" represented a Middle English phrase "up on," which meant "from a lower to a higher place." So when we say "clear up," it literally means "to clear things away or eliminate confusion, doubt, or impurities and raise them to a higher status or place." This meaning has evolved over time, and now "clear up" is commonly used to describe weather that improves, as in "the rain is supposed to clear up by afternoon." In summary, the phrase "clear up" has been a part of the English language for centuries, and its origins can be traced back to Middle English, where it meant to clear things away and raise them to a higher place. Over time, its meaning has expanded to describe a variety of scenarios, from eliminating doubt and confusion to improving weather conditions.