The expression "bringing into the open" refers to the act of revealing or exposing some information or situation that was previously hidden or unknown. Some antonyms for this phrase could include "concealing," "hiding," "suppressing," "withholding," or "keeping under wraps." In contrast to the idea of bringing something into the open, these words suggest an intention to keep something secret or private. Such actions might be motivated by a desire to maintain privacy or control over a situation, or to avoid unwanted attention or criticism. However, in certain circumstances, concealing or hiding information may be unethical or even illegal, if it involves misleading or deceiving others.