The antonyms for the phrase "giving idea of" are quite varied. Some possible options might include "obscuring," "confusing," or "misleading." Instead of giving a clear indication or sense of something, these words imply a sense of opacity, opacity, or inaccuracy. Other antonyms might include "withholding," "concealing," or "suppressing," all of which suggest a deliberate effort to keep information or insights hidden from others. In the context of communication or rhetoric, these antonyms can be quite significant, as they highlight the challenges and complexities of conveying ideas effectively and accurately to others.