Antonyms for the phrase "more weak-kneed" could include synonyms like strong, brave, resolute and determined. These words imply confidence and firmness, which is the exact opposite of weak-kneed. Other antonyms could include bold, fearless, courageous and daring. These words not only describe a person who is not weak-kneed but also denotes a level of fearlessness and valor which is highly admirable. It is essential to understand the concept of weak-kneed and its antonyms because it helps to categorize people based on their behavior in different situations. Furthermore, it helps to create a better understanding of how the antonyms can be applied in daily discussions and decision-making processes.