The term BE CONFIDENT OF can be broken down into four crossword solutions: KNOW (4 letters), SURE (4 letters), SMUG (4 letters), and COUNTON (7 letters). Knowing something means having a deep understanding of it, being SURE is having a strong conviction that something is true, being SMUG is having an excessive sense of self-satisfaction, and counting on something is relying on it to happen. Therefore, BE CONFIDENT OF can be interpreted as having a deep understanding of something, having a strong conviction that it is true, having an excessive sense of self-satisfaction about it, and relying on it to happen.