The phrase "gives lowdown" means providing information that is usually confidential or hard to obtain. The opposite of "gives lowdown" is to withhold information or keep secrets, which demonstrates a lack of transparency. Other antonyms for "gives lowdown" include ignoring, neglecting, remaining silent, and avoiding topics. Sometimes, the opposite of "gives lowdown" means providing false information, such as lying, misleading, or deceiving others. Honesty and trustworthiness are crucial when communicating vital information to others. Therefore, it is better to be cautious and ask questions before accepting any new data to avoid falling into traps of false data.