Antonyms for the word de-brief include keep secret, withhold information, conceal, hide, and neglect to mention. While de-briefing is a process of sharing information after an event or mission, its antonyms refer to the act of keeping information from someone. For example, a spy may withhold information from their handler to conceal their own activities. Additionally, rather than de-briefing a witness, a lawyer may neglect to mention certain evidence to the jury to sway the outcome of a case. Understanding antonyms for words like de-brief helps to broaden vocabulary and improve communication skills by using precise language to elucidate one's thoughts or intentions.