What quality does 'improbus' specifically refer to?

The term 'improbus' specifically refers to badness or wickedness. In Latin literature, including Cicero's works, 'improbus' often describes someone who is morally corrupt, dishonest, or wicked in action. It conveys a sense of immorality or wrongdoing, which is a pivotal aspect of its meaning. This word can be used to describe behaviors or characteristics that are negative or undesirable, aligning perfectly with the concept of badness. In contrast, the other choices do not reflect the essence of 'improbus' in this specific context, as they pertain to positive or neutral qualities. Thus, recognizing 'improbus' as associated with badness provides a clearer understanding of its use in Latin vocabulary and literature.