“Behind closed doors” refers to actions, decisions, or discussions that take place privately, away from public view or scrutiny. This phrase often implies that whatever happens in private may involve secrets, confidential matters, or activities that are not meant to be disclosed to others. It can carry a neutral, positive, or negative connotation depending on the context. For example, it might refer to private negotiations in a business setting, intimate conversations between loved ones, or secretive actions that could be questionable or unethical. The phrase evokes a sense of mystery and intrigue, suggesting that what happens behind those closed doors is not easily accessible or understood by outsiders.