The term 'casts up' denotes a specific action, which means bringing to fruition or delivering something. However, when we explore its antonyms, we find contrasting terms that represent different meanings. The antonym for 'casts up' can be many, such as hold back, withhold, repress, suppress, or quell. Holding back refers to the act of preventing something from happening, and it is opposite to casting up, where we bring it forward. Similarly, repressing and suppressing both exhibit the stoppage of something from emerging or exposing. Quelling is another opposite term that suggests pacifying or calming something down, unlike casting up, which refers to manifesting it into action.