What word describes the quality of clear understanding?

The word "lucidity" is used to describe the quality of clear understanding. It denotes clarity in thought, expression, and perception, enabling one to see things in a straightforward and comprehensible manner. When a situation or concept is understood with lucidity, it signifies that the details are presented in an unambiguous way that enhances comprehension.

In contrast, confusion refers to a lack of clarity or understanding, where thoughts are mixed up and not easily comprehensible. Obscurity conveys a sense of being unclear or difficult to perceive, often to the point where understanding is impaired. Ambiguity involves vagueness or multiple interpretations, which directly contradicts the notion of clear understanding. Thus, lucidity stands out as the term that captures the essence of clear and precise understanding effectively.